确切地说，每小时有17次。

Seventeen times per hour, to be exact.

youdao

如果你能在胳膊下夹着一块砖头，在广场上不停地走五个小时，我给你每小时一英镑。

I'll give you one pound an hour, if you will carry a brick under your arm and walk around the square for five hours without stopping.

youdao

就像蓝色的幻影，翠鸟垂直地冲进水里。它的速度可以超过25英里每小时。

An azure blur, a kingfisher plummets toward the water, reaching speeds of more than 25 miles an hour.

youdao