The Mechanist gave me this timing device.

机械师给了我这个计时装置。

Dr. Sayre says you do not need a measuring stick or a timing device. If the heart does not start beating, continue with chest compressions until help arrives.

Sayre 博士说你不需要量尺或计时装置。如果心脏没有开始跳动，继续按压胸部直到救援人员到来。

Rehearse your presentation with a timing device. At most conferences, there is a time limit. It is disrespectful to take more than your share of the time. Cut your presentation to fit the time you are permitted.

5. 使用计时设备排练您的演示文稿。大多数会议都有时间限制。占用超过您应得的时间是不尊重他人的行为。缩短您的演示文稿以适应允许的时间。