cased bottom off 箱底掉
fill off bottom 井底填砂
off bottom 离开井底
buoyant off-bottom tow method 离海底浮拖铺管法
bottom casing pack off 底部套管封隔器
Bottom push off double deal 底推双牌
off-bottom setting tool 不坐底坐封工具
off-bottom spacing 离井底的距离
The bottom line is that you need to study, eat a good meal, sleep well on the eve of the test, and believe that your efforts will pay off.
底线是你需要在考试前夕学习,吃好饭,睡好觉,并相信你的努力会得到回报。
They want to be sure that he is not dealing off the bottom of the stack of cards.
VOA: special.2009.11.22
We just go through the list top to bottom, left to right, and cross names off as we go.
我们会从上到下,从左到右看那个问题清单,如果解决了就把名字擦掉。
STUDENT: -- want to be off the bottom branch.
学生:脱离最底层的分支。
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