Prelaser
a. 激光照射前的\\nn. 激光敏感剂
🗣️ 情景例句
we don't have to.
我们不必勉强。
I also want to express my gratitude to all of my teachers over the years.
另外，我还想感谢这个多年来所有教过我的老师。
Who has not stood in awe at the sight of a spider pouncing on a fly, or a column of ants triumphantly bearing home an enormous dead beetle?
当看到蜘蛛扑向一只苍蝇时，一队蚂蚁抬着一只巨大的死甲虫凯旋归时，谁能不感到敬畏呢？