量取面粉时以一平匙或一平匙的分数来计数。

All flour measurements are for level tablespoons or fractions.

youdao

为什么只量取内侧的长度而不是外侧的长度呢？

Why do I measure the length inside instead of outside?

youdao

所以说，精确有效地量取通风量显得尤为重要。

Therefore, to measure accurately the effective ventilation is very important.

youdao

It's useful to have the average acceleration, which you can find by taking similar differences of velocities.

平均加速度也是很有用的,你可以用类似方法,取速度的变化量求出来

耶鲁公开课 - 基础物理课程节选