You've heard this before. About silencing your phones.

是你之前听过的。把手机调成静音。

They have to pass all required courses before getting diplomas.

在毕业之前，他们需要通过所有要求的考试。

Egged on by a friend, Cottle did one lap before pulling over.

受一个朋友的怂恿，Cottle在上面开了一圈才停下来。

Venice could suffer more catastrophic floods before then.

在此之前，威尼斯可能遭受更大的洪水灾害。

Have you ever lived in a dorm before?

你之前经历过住宿生活吗？

Towels and hairdryers Dry your hair gently with a towel before using the hairdryer.

毛巾和吹风机使用吹风机前，用毛巾轻轻擦干头发。

Many of them had been displaced several times before.

其中许多人此前有过数次流离失所的经历。

I never heard it before, but it's rotten nonsense.

" 我从来没听说过，但这是胡说八道。"

The Knave of Hearts was standing in chains before them.

红桃杰克正带着链子站在他们前面。

Mars is opening up like never before.

呈现在我们面前的是火星前所未有的景观。

Have you had anything like this before?

之前感到过这样吗？

The civil unrest has stranded tourists before.

因内乱造成游客滞留的情况在此前已有先例。

Well, yes, I've never done that before.

是的，我之前从没试过。

It was 3.5 percent the month before.

前一个月的失业率为3.5%。

Tik Tok has experienced this all before.

Tik Tok以前就经历过这一切。

Pakistanis have been around this block before.

巴基斯坦此前曾实行过类似的禁令。

Drinking water was unsafe before the floods.

在洪水之前，饮用水就是不安全的。

Even Lilly will lose teeth before me!

连莉莉都会比我先掉牙!

Dow was up slightly before the close.

收市前，道琼斯工业平均指数小幅上升。

Jordanians were lukewarm to the coalition even before this hostage crisis.

在人质危机发生前，约旦人对联盟的态度不冷不热。