献宝的英文：
present a treasure
adj. 目前的，现在的；出席的，在场的；现在时态的
v. 赠送；提出；介绍；举枪瞄准；呈现
n. 礼物；现在
There is at present uncertainty regarding the hazard to health presented by crocidolite.
目前，青石棉对健康的危害尚不清楚。
Some diseases are presented by heredity.
有些疾病是由于遗传导致的。
should alternately present as undulate .
激情平淡应呈波浪形交替出现。
A verb form in the present tense.
现在时态的动词形式
give away; make a present of
赠送