This paper has introduced a set of test device to examine the loads on teeth of the bit at different rotary speed and under high bit-weight.
本文介绍了一套测试装置，用以测试钻头在大钻压下任意转速的牙齿受力。
The first message in my box was offering me discounted teeth whitening, so I did a quick bit of research online into the pros and cons of home vs laser teeth whitening before I snapped up the bargain.
第一封邮件是牙齿美白折扣，抢购之前，我快速搜了一下网上关于激光美白牙齿利弊的评论。
To do the red carpet look, tilt your head, subtle smile, little bit of teeth, open mouth.
做一个隆重的表情，倾斜你的头，轻微地笑着，露一点牙齿，微张着嘴。
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