at a rate of造句

New diet books appear at a rate of nearly one a week.
新的饮食类书籍差不多一周出一本。

Car hijackings are running at a rate of nearly 50 a day.
劫车事件的发生率高达每天近50起。

The water is advancing at a rate of 5cm a day.
水位正以每天5厘米的速度上升。