is.

A serial killer is on the loose!

有个连环杀手正逍遥法外！

He is under the delusion that he is Napoleon.

他患了妄想症, 认为自己是拿破仑。

There is a general awareness that smoking is harmful.

人们普遍认烟有害健康。

It is impossible to disguise the fact that business is bad.

生意不好这件事无法隐瞒。

It is impossible to disguise the fact that finance is bad.

财政困难这一事实是无法隐瞒。

Her study is based on the hypothesis that language simplification is possible.

她研究基于语言可以简化这样一个假说。

It is strange, and yet it is true.

是奇怪, 可是真。

My objection is that he is too young.

我反对是因为他太年轻。

It is logical that the book is expensive.

书贵是很自然事。

That oatmeal is so bland that it is tasteless.

那种燕麦粥平淡无味。

It is distinct that smoking is harmful to health.

很明显, 抽烟对健康有害。

The article is very important though it is short.

那篇文章虽然很短，但很重要。

The rarer it is, the more it is worth.

物以稀为贵。

As the twig is bent so the tree is inclined.

针,长大金。

The moral of the story is that 'Solidarity is strength'.

这个故事教益在于'团结就是力量'。

He is proud that his wife is accessible to reason.

他妻子通情达理,为此他引以为豪。

It is generally admitted that he is a trustworthy person.

大家一致公认他是个可信赖人。

It is said that civilization is always on the move.

有人说文明总是在进步。

The trouble with her is that she is too headstrong.

她毛病是太固执。

Whether mercy killing is justifiable is still an open question.

安乐死是否正当仍然是一个有争论问题。