邳pī
Pi (an ancient place in Jiangsu Province); a surname
期限qī xiàn
time limit; allotted time; deadline; due time
趁空chèn kōng
use one's spare time; avail oneself of leisure time
等待时机děng dài shí jī
bide one's time, watch one's time
一半时间yī bàn shí jiān
half the time
分期的fèn qī de
time
上次shàng cì
last time
上古shàng gǔ
ancient times
踏步tà bù
mark time
现代xiàn dài
modern times
中古zhōng gǔ
mediaeval times
专职zhuān zhí
full time
渡越时间dù yuè shí jiān
transition time; transit time
多次duō cì
time after time, times without number
交付时间jiāo fù shí jiān
delivery time; lead time
夏令时xià lìng shí
daylight saving time; daylight-saving time
有时yǒu shí
sometimes, at times, at whiles, for time to time, from time to time, on occasion
提早tí zǎo
ahead of time, before one's time
笑口常开xiào kǒu cháng kāi
grinning all the time
良久liáng jiǔ
a long time
每当měi dāng
every time, whenever
时代周刊shí dài zhōu kān
Time
时光shí guāng
days, time, times
时间测定shí jiān cè dìng
timing
时间选择shí jiān xuǎn zé
timing
原声例句
Crash Course Physics 速成课物理
So, 2 times pi times the radius.
因此，2 倍 pi 乘以半径。
Physics
The surface area of a sphere is equal to (4) times (pi) times (its radius squared).
球体的表面积 等于 (4) 乘以 (pi) 乘以（其半径的平方）。
玩转物理学
We also know the Coulomb constant equals the inverse of the quantity four pi times the permittivity of free space.
我们还知道库仑常数等于四圆周率乘以自由空间介电常数的倒数。
Crash Course Physics 速成课物理
In this case, the frequency will also be equal to 1 over (2 pi) times (the square root of k) over (m).
在这种情况下，频率也等于 1 乘以 2 pi 乘以 k 乘以 m 的平方根。
可汗学院：统计学（视频版）
And all of a sudden, this becomes a very clean-- we just say 2 pi times our variance, times e to the number of standard deviations we are away from the mean.
突然间，这变得非常干净——我们只是说 2 pi 乘以我们的方差， 乘以 e 到我们远离均值的标准差数。