actual bit on bottom time 纯钻进时间
on bottom time 水底停留时间
net time on bottom 纯钻井时间 ; 纯机械钻进时间
time on bottom 高压下停留时间
This time she noticed a hook at one end, and there were several words on the bottom of the box: Hang on a sunny window.
这次她注意到盒子的一端有一个钩子,盒子底部有几个字:挂在向阳的窗户上。
A tip: try to stay within three chunking levels for most of the time, digging deeper only on topics of particular interest where you want to bottom out the subject.
这里有个小提示:绝大多数情形,你应该试着只问三个以内的问题,而且只在那些你特别感兴趣然后希望彻底弄明白的事情上。
The scientists observed that the tetras that normally spend time in the light do sleep soundly at night, resting on the bottom of their tanks.
科学家观察发现,接触阳光时长正常的鱼类在晚上会在鱼缸底部睡得很安稳。
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