No more for me. I have to watch my weight.

我不再吃了。我得控制体重。

《牛津词典》

Watch your weight.

注意你的体重。

youdao

The cons hurry for cover and watch the bars pull free from the window – the weight of the elevator blows them off easily.

团伙们匆忙地找东西垫在地上，他们看着栅栏被从窗户上拉下来-电梯的重量轻松地就将它们扯动了。

youdao

And watch your weight.

CNN: Heavy snoring can be a danger sign

He must check all the miners' vital signs and do daily tests as well as keeping a close watch on the men's weight.

CNN: A day in the life of trapped Chile miners

So accurate are K-Tron's scales that sales reps like to step onto them, hand clients a business card and watch their faces while the difference in weight is registered.

FORBES: Magazine Article