这是电影演员时常会做的，我已看过数十多次，或许数百次了。
That's what a movie cast always does. I've seen it dozens, maybe hundreds of times.
它是川剧中的一种特殊技法，在几秒钟内可以多次变换脸部妆容，表演时常常用它来表达剧中人物的不同的思想感情。
It refers to the changing of masks in quick succession to show different emotions and feelings of the character in the play.
我经常可以发现这样一个情况，从某位运动员的同伴那里可以听到一些建设性的批评意见，这些意见时常能够让人理解信息，尽管这些信息运动员已经从他的教练那里听了许多次了。
I have often found that hearing constructive criticism from one's peers oftentimes drives home the message, even if your swimmer has heard it many times from his or her coach.
针对测井仪器的引鞋种类单一，测井仪器下井过程时常发生阻卡，导致多次通井及重复处理，影响工作进度并使成本增加的问题，研制了滚动式被动牙轮测井畅通器。
The well logging tool is often blocked when it goes down or up in downhole, so a trip unblocking apparatus for the well logging tool in downhole is developed.
针对测井仪器的引鞋种类单一，测井仪器下井过程时常发生阻卡，导致多次通井及重复处理，影响工作进度并使成本增加的问题，研制了滚动式被动牙轮测井畅通器。
The well logging tool is often blocked when it goes down or up in downhole, so a trip unblocking apparatus for the well logging tool in downhole is developed.
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