It is important never to overdo new exercises

　　重要的是，不要過度練習新學的動作。

　　You should work hard, but don't overdo it and make yourself ill.

　　你應努力工作，但不可過度把自己累病了。

　　The meat was ─ how shall I put it? ─ a little overdone.

　　這肉嘛，怎么說呢，做得稍微老了點兒。

　　Use illustrations where appropriate but don't overdo it.

　　要適當地使用插圖，但不宜過多。

　　I overdid it in the gym and hurt my back.

　　我在健身房練得過火了，結果弄傷了背。