Therefore, to be on a diet is preferable.

因此，节食是可取的。

youdao

I was invited to be on a diet one minute before.

一分钟以前我被邀参加一个饭局。

youdao

If you don't mind, could you tell me when you started to be on a diet?

假如你不介意的话，请告诉我你是什么时候开始节食的。

youdao

And if the phone is going to literally be nothing more than a portal to the web, then it's going to be a tough sell for those that have to subsist on a very strict data diet.

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Fundamentally, unless you're going to be shopping for groceries every day, it'd be preferable to work out your diet on a weekly basis, but there's no evident way to offer this up in Nutrino's present form.

ENGADGET: Nutrino is a virtual nutritionist for iOS, we go hands-on

During Ramadan or Lent, for example, the observant manage to be self-denying even as they struggle to stay on a diet or hold back their temper.

WSJ: Jonah Lehrer on Religious Thoughts and Self-Control | Head Case