底分层 bottom slice
奥辐德顶底分层炼镍法 orford process
船底分隔 bottom separation
海底分路复用器 undersea branching multiplexer
白化病眼底分析征 Albinotic Fundus Syndrome
楦底分踵线 [服装] center line of last bottom
平生粗识安危分，脚底风波未足惊 "Having experienced my fair share of perils in life; lesser troubles are nothing alarming".
彻底分开 make a thorough break
井底分离器 bottom hole separator
每天早晚进行五分钟的交替鼻孔呼吸练习能够让你从肺底排出大量废气和杂质。
A daily five minute practice morning and night of alternate nostril breathing is great way to remove stale air and impurities from the bottom of your lungs.
或许，问你有孩子幸福还是没孩子幸福，归根结底就是在问你看到的是糖果盘的哪一部分——是空的那一半还是满的那一半，至少我这个当娘的是这么看的。
Perhaps it just comes down to how you see the candy dish-half empty or half full. Or at least as a parent, that's what I'll keep telling myself.
截至那年的10月底，道指已跌去了近四分之一。
By the end of October, the Dow had lost nearly a quarter of its value.
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