Take an arc of one degree, divide it into sixty, and that's an arcminute.

取一个度的弧度，将其分成六十分，就是一个弧分。

This 1.5 billion pixel image from the Hubble telescope covers about a thousand square arcminutes, and contains more than 100 million stars.

这张来自哈勃望远镜的 15 亿像素图像覆盖了大约 1000 平方角分，包含了超过 1 亿颗恒星。