is

She maintains that the accusation is groundless.

她坚持该指控是毫无根据的。

She often complains that he is dishonest.

她常埋怨说他不诚实。

Carroty, do you know whatSpring Festival is?

小萝卜，你知道春节是什么吗？

Length is one dimension, and breadth is another.

长是一种度量, 宽又是另一种度量。

I'll be blowed if it is so.

绝不会有这回事。

Africa is a continent, but Greenland is not.

非洲是大陆, 而格陵兰不是。

It's evident that the plan is impracticable.

明显这计划是不能实现的。

Although she is young, she is very independent.

虽然她，但是有主。

I like this bit because it is funny.

欢这部分，因为它有趣。

What a fine little beggar your boy is!

你的儿子是个多么可爱的小家伙呵!

Are you aware that there is a difficulty?

你知道有困难吗?

What you do first is to calculate the mean.

你要做的第一件事就是算出平均数。

Aluminium looks heavy but actually it is very light.

铝看起来重,实际上却。

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

根深叶才茂,志壮干劲高。

How do you demonstrate that the earth is round?

你怎样证明地球是圆的?

It is in the dinging that life is lived.

生命正是在挖掘的过程中才具有活力。

They discover that the new teacher is a martinet.

他们发现新来的老师非常严格。

She is not very clever but she is painstaking.

她并不聪明, 但肯下苦功夫。

That is an ironclad fact that is beyond controversy.

这是铁的事实，无庸置辩。

A passport that is out of date is invalid.

护照过期是无效的。