timing
n [U]
(a) determining or regulating the time when an action or event occurs 定时; 调整时间
[attrib 作定语]
a `timing device 定时装置
The timing of the announcement was rather unexpected. 选择那个时间公布, 真出人意料.
valve timing, ie the time at which valves in a motor engine open and close 阀定时.
(b) skill in this, as a way of achieving the desired result 时间的选择; 时机的掌握
He's not playing his shots well his timing is faulty. 他没打好--时间掌握不当.
A good actor must learn the art of timing, ie when to deliver a line most effectively. 要想当个好演员就要学会掌握道白的时间分寸.