All were very happy with those unexpected gifts.

这把椅子又硬又不舒服。

Diamonds are the hardest known mineral.

钻石是已知的最坚硬的矿石。

He is hard to get along with.

他这人很难打交道。

She found it hard to make up her mind.

她发觉自己难以下决心。

— Which city did you like better, Paris or Rome?

你更喜欢哪座城市，巴黎还是罗马？

— It's hard to say. There were good things and bad things about them.

很难说，它们有好有坏。

It's hard to imagine what life would be like without daily advancements in technology.

很难想象，没有科技的日益进步，生活会是什么样子。

give sb a hard time

让某人难堪/吃苦头

While I was growing up, we lived a very hard life.

在我成长的过程中，我们过着非常艰苦的生活。

Cold weather can be hard on pets, just like it can be hard on people.

就像对人一样，寒冷的天气对宠物来说也是难以忍受的。

He's hard at work on a new novel.

他正努力写一部新小说。

hard blows

猛烈的打击

a hard winter / frost

严冬/寒

He said some very hard things to me.

他对我说了些很不近人情的话。

Do you think we were too hard on Daniel?

你觉得我们对丹尼尔是不是太苛刻了呢？

hard liquor

烈酒

I studied hard, for I didn't want to let Mum down.

我努力地学习，因为我不想让妈妈失望。

It is raining hard.

雨下得很大。