With mathematical problems, you can save time by approximating.

对于数学题，你可以用近似法省时间。

Chuck Berry, who I saw a year or two ago, played guitar and did something approximating a dog walk.

在一两年前，我看到 Chuck Berry 弹着吉他，像小狗走路一样跳着舞步。

This produces an image closely approximating a false colour photograph.

这种产生的影像几乎不真实的彩色照片。

We'll also cover asking hypothetical questions and approximating Numbers.

我们也会涉及到询问假定的问题和估计大致数字。

It is significative for the smooth property of approximating curves and surfaces.

这对于研究逼近曲线曲面的光滑性是很有意义的。