sad

I've just received some very sad news.

我刚刚得到一些令人伤心的消息。

She gave a sad smile.

她露出了一丝苦笑。

It's sad (that) the trip had to be cancelled.

很遗憾旅行被迫取消了。

I'm so sad (that) you can't come.

你不能来，我很遗憾。

It's sad to see so many failures this year.

今年看到这么多失败的事情真是令人难过。

I was sad to hear that they'd split up.

听说他们分手了，我很难过。

Give those flowers some water – they're looking a little sad.

给那些花浇点儿水——它们看上去蔫巴巴的。

The sad fact/truth is we can't afford to provide homes for all.

令人遗憾的事实是，我们无法为所有的人提供住所。

a very sad state of affairs

十分糟糕的时局

Sad to say, the ring was never found.

真可惜，那枚戒指一直没有找到。

You enjoy reading timetables? You sad man!

你喜欢读时间表？你可真无聊！

Staying at home on a Saturday night is just sad.

星期六晚上呆在家里真是无聊。