1. convincing [kənˈvɪnsɪŋ]
adj.使人信服的，有力的，令人心悦诚服的
able to make you believe that something is true or right
参考例句：
1. The data you have collected is not enough to be convincing. 你们收集的材料说服力不足。
2. His version of the accident seemed most convincing. 他对该事件的叙述似乎最令人信服。
2. robber [ˈrɒbə(r)]
n.抢劫者，强盗，盗贼
someone who steals
参考例句：
1. The robber told the woman to come across with her purse. 拦路抢劫者勒令那个女人把钱包交出来。
2. The robber tried to run away but a man tackled him. 强盗企图逃跑，但有人把他抓住了。
3. unforgettable [ˌʌnfəˈgetəbl]
adj.难忘的
An unforgettable experience has such a strong effect or influence on you that you cannot forget it.
参考例句：
1. The trip had been unforgettable experience for both of us. 那趟旅行是我们两人难以忘怀的经历。
2. He created many unforgettable characters in his novels. 他在他的小说中创造了很多令人难忘的人物。
4. mammal [ˈmæml]
n.哺乳动物
any animal of which the female gives birth to babies , not eggs , and feeds them on milk from her own body
参考例句：
1. A whale is a kind of mammal. 鲸是一种哺乳动物。
2. The bat is the only mammal that can fly. 蝙蝠是唯一会飞的哺乳动物。
5. alternative [ɔ:lˈtɜ:nətɪv]
n.两者挑一的，可供选择的；adj.选择性的，二中择一的
something that is different from something else , especially from what is usual , and offering the possibility of choice
参考例句：
1. There was no alternative for them to vote in favor. 他们别无选择，只有投票赞成。
2. She had no alternative but to ask for a few days‘leave. 实在不得已，她只好请几天假。
6. inject [ɪnˈdʒekt]
vt.注射，注入，注满
to use a needle and syringe (= small tube ) to put a liquid such as a drug into a person‘s body
参考例句：
1. We hope to inject new life into our work. 我们希望给我们的工作注入新的活力。
2. He needs to inject himself once a month. 他需要每月为自己打一针。
7. arrow [ˈærəʊ]
n.箭，矢；箭状物，箭头符号
a weapon that is like a long thin stick with a sharp point at one end and often feathers at the other, shot from a bow (= a long thin piece of wood bent into a curve by a piece of string )
参考例句：
1. He was shot in the shoulder with an arrow. 他的肩膀被箭射中。
2. The letter was nailed to the wall with an arrow. 一支箭把信钉在了墙上。
8. insert [ɪnˈsɜ:t]
vt.插入，镶补；vi.附着；n.插入，插入物
to put something inside something else , or to add something, especially words, to something else
参考例句：
1. I wish to insert an advertisement in your newspaper. 我想在贵报上登一则广告。
2. The newspaper had an insert of pages of pictures. 该报带有数页插图。
9. cellphone [ˈselfəʊn]
n.手机
a mobile phone
参考例句：
1. This type of cellphone is on the way out. 这种类型的手机即将过时。
2. The cellphone is a useful tool. 手机是很有用的工具。
10. grateful [ˈgreɪtfl]
adj.感谢的，感激的，受欢迎的，表示谢意的
showing or expressing thanks , especially to another person
参考例句：
1. If you will help us, we shall be very grateful. 如果你愿意帮助我们，我们会很感激你。
2. He closed his letter with expression of grateful thanks. 他在那封信的结尾表达了自己的感激之情。
11. drill [drɪl]
vi. 钻孔；训练 vt. 钻孔；训练；条播；n.操练；练习；钻孔(机)
a tool or machine which makes holes
参考例句：
1. He used a drill to bore a hole in the door. 他用钻在门上钻孔。
2. You should drill some manners into the boy. 你应该教这孩子懂点礼貌。
12. originally [əˈrɪdʒənəli]
adv.本来，原来，最初，就起源而论，独创地
first of all
参考例句：
1. Originally I didn‘t want to go. 我本意不想去。
2. After much discussion they settled on the plan originally proposed. 他们讨论了很久，然后确定了原来提出的那个计划。
13. self-improvement [self ɪm‘pru:vmənt]
n.自我改善；自我修养
the act of improving yourself
参考例句：
1. Reading is meantime a process of self-study and self-improvement. 同时，阅读又是一种自主学习、自我提高的过程。
2. Only through self-improvement can one be respected by others. 只有自强，才能受到别人的尊重。
14. recipe [ˈresəpi]
n.食谱，处方，秘诀
a set of instructions telling you how to prepare and cook food , including a list of what food is needed for this
参考例句：
1. What is your recipe for success? 你取得成功有什麽窍门？
2. This recipe is certainly interesting and different. 这种烹饪法的确很有意思而且与众不同。
15. criminal [ˈkrɪmɪnl]
n.罪犯，犯人，刑事；adj.犯了罪的，罪的，有罪的
someone who commits a crime
参考例句：
1. He is a habitual criminal. 他是一个惯犯。
2. We captured the criminal. 我们捕获了那个犯人。
16. noble [ˈnəʊbl]
n.贵族；adj.高贵的，高尚的，贵族的，辉煌的
moral in an honest , brave and not selfish way
参考例句：
1. He is a noble man, we all admire him. 他是一个道德高尚的人，我们都敬佩他。
2. Niagara falls is a noble sight. 尼亚加拉瀑布是一壮观的景色。
17. clown [klaʊn]
n.小丑；丑角
an entertainer who wears funny clothes , has a painted face , and makes people laugh by performing tricks and behaving in a silly way
参考例句：
1. Doesn‘t the clown look funny! 这小丑看上去真是滑稽！
2. A clown‘s job is to amuse the spectators. 小丑的工作就是娱乐观众。
18. permit [pəˈmɪt]
n.许可证，许可，执照；vt.允许，容许；vi.容许
to allow something
参考例句：
1. The doctor will not permit mother up until her leg is better. 在母亲的腿好些之前,医生不允许她起床。
2. The soldiers had orders to permit no stranger through. 士兵们接到命令不许任何陌生人通过。
19. edge [edʒ]
n.边(缘)；刃；优势；v.侧着移动，徐徐移动
the outer or furthest point of something
参考例句：
1. Sight along the edge to see if it‘s straight. 顺着边目测，看看直不直。
2. She lived on the extreme edge of the forest. 她住在森林的最边缘。
20. resolution [ˌrezəˈlu:ʃn]
n.坚定，决心，决心要做的事，决定，决议
an official decision that
is made after a group or organization have voted
参考例句：
1. You must stand to your resolution. 你一定要坚守你的决心。
2. I still haven‘t given up my resolution to do more reading. 我仍然还没有放弃多看些书的决心。