n. 年龄;时代;老年;年龄段;
vt.& vi. (使)长大;使显老;使变老;使苍老;
vi. [化学]老化;陈化,熟化;(吸毒者随年龄增长而主动)戒毒,戒除毒品;
vt. [化学]使老化;使陈化;使熟化;估计,推测(马的年龄);
🗣️ 情景例句
I know.
我知道。
Now, I'd be happy to answer your questions.
现在,我乐意答复你们的问题。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.