例句：

　　She exercises two or three times a week.

　　她一周鍛煉兩三次。

　　Let's start off with some gentle exercises.

　　我們先來(lái)做點(diǎn)強(qiáng)度小的練習(xí)。

　　These exercises will help to keep you supple.

　　這些鍛煉項(xiàng)目有助于你保持身體的柔韌性。

　　It is important never to overdo new exercises.

　　重要的是，千萬(wàn)不要過(guò)度進(jìn)行一項(xiàng)新的鍛煉。