is

Let us timolol, is understandable, is trust.

让我们心安，是理解，是信任。

"His speciality is biology, mine is physiology."

"他专业是生物学,我专业是生理学。"

She often complains that he is dishonest.

她常埋怨说他不诚实。

Once he is unemployed, he is done for.

他一旦失业就完蛋了。

This baby seldom cries unless he is tired.

个婴儿除非在疲倦时很少哭。

People are waking up that he is arrogant.

人们开始认识到他很傲慢。

Although she is young, she is very independent.

虽然她很年轻，但是很有主见。

I like this bit because it is funny.

我喜欢部分，因为它很有趣。

What a fine little beggar your boy is!

你儿子是个多么可爱小家伙呵!

He bites at anyone when he is mad.

他发起火来谁都骂。

Africa is a continent, but Greenland is not.

非洲是大陆, 而格陵兰不是。

Whether or no it is true remains a question.

到底是真是假还是一个问题。

She is a skier who is unafraid of danger.

她是一名敢于冒雪者。

Kill a Spitter before she is able to spit.

吐痰姐姐吐痰之前干掉她。

Aluminium looks heavy but actually it is very light.

铝看起来很重,实际上却很轻。

A deep-rooted tree is leafy;an ambitious man is vigorous.

根深叶才茂,志壮干劲高。

It's a blessing that the flood is over.

"洪水终于过去了,真是幸事。"

A passport that is out of date is invalid.

护照过期是无效。

She is not very clever but she is painstaking.

她并不很聪明, 但肯下苦功夫。

Neither the concession is disgrace, nor the resipiscence is.

让步非耻，认错亦非辱。