双刃的英文：
double-edged;
two-edged
Hydraulic shear-dual, dia set, resquaring shear set-down out type.
液压剪，双刃剪，冲模,正方切剪设定。
Your task is to grub out the history of this double edged sword
你的任务是去查清楚这把双刃宝剑的来历。
"As is so often pointed out, knowledge is a two-edged weapon which can be used equally for good or evil. "
人们常说知识是一把双刃刀,它既能造福人类,又会给人类带来祸害。
adj. 加倍的；两倍的；双人的；双重的；两面派的
adv. 双重地；两倍地；成双地
n. 两倍；加倍；
v.（使）加倍
to double steal
双盗垒
double steering
双转向
The child birthrate in that area has doubled.
该地区的婴儿出生率已经增加了一倍。
adj. 有……边的，有刃的；锋利的，磨尖的，磨刃的；微醉的
The number of incoming edges is equal to the number of outgoing edges
进入的线数等于离去的线数。
pipe edges sewing machine
滚边缝纫机
Sloth turneth the edge of wit
懒惰会磨去才智的锋芒
num. 二，两个
n. 两个人
adj. 两个的
Knit two, purl two.
两针朝下，两针朝上。
the better of the two
两者中的更好者
What does two and two make?
2加2等于几？