I got roped in to help with the timekeeping.
我被拉来帮忙计时。
Who did the timekeeping?
谁负责计时？
Set the kitchen timer going.
让厨房计时器开始计时。
The spaceship is already being counted down.
宇宙飞船已开始倒数计时了.
He timed a runner in the race.
他为一名赛跑运动员计时.
The watch is an excellent timekeeper.
这个表计时相当精确.
The answer lies in the time - measuring instruments used in ancient China.
这与我国古代使用的计时仪器有关.
Anthony isn't clocking yet, but says he's considering it.
安东尼尚未干计时贩毒的买卖, 但他说他正在考虑这样做.
Consequently, radiometric dating has advanced briskly in the past 30 years.
因此, 新近三十年来,放射性计时迅猛发展.
The runner was timed for the mile in four minutes flat.
这个赛跑运动员的1英里跑计时成绩为4分整.
The timing method is tedious.
计时法繁琐.
These mixtures of astronomical instruments and time - measuring devices cannot be seen as independent time measurers.
这类计时器尚不能算是独立的计时器,还是天文仪器与计时仪器的混合体.
The accuracy of scientific observation and calculations always depends on the scientist's timekeeping methods.
科学观测及计算的精度总是取决于科学家的计时方法.
For this reason, scientists are interested in devices that give promise of more precise timekeeping.
鉴于这一原因, 那些更能确保准确度的计时设备便引起了科学家们的兴趣.
Many ancient Chinese men of letters left behind beautiful verses about the clepsydra.
作为计时器,漏刻的使用比日晷史为普遍.