These reference books are of great use for our study of English.

It is of great use.

这玩意儿是极灵通的.

Of course, not all herbs are safe for children all the time.

当然, 不是所有的草药对儿童一直安全的.

Of course, not. But you must have foundation of middle school English.

周奔驰:当然, 前提是必须学过中学的英语.

Nick: Of course not. You can't see a sprain on an X-ray.

尼克: 当然不能. 你就是在 X 光片上也看不到扭伤啊.

Of course, not all scientists, artists and writers give such mysterious answers.

当然, 并不是所有的科学家, 艺术家和作家都能给出这样的玄乎的答案.

There is plenty of coal in this area.

这个地区有丰富的煤.

We stored up ten tons of coal for the winter.

我们为过冬储备了10吨煤.

The consumption of coal in that factory is five tons a day.

那个工厂每天的煤耗达五吨.

We must renew our supplies of coal.

我们必须补充煤的储备.

A visit to China is the trip of a lifetime.

到中国旅游是个千载难逢的好机会.

One chance can turn the dream of a lifetime into reality.

一次的机遇可以使终生的美梦变为现实.

It would be foolish to let such an opportunity slip; it's the chance of a lifetime.

让这样的机会溜掉,实在愚蠢; 那是千载难逢的呀!

Mental models are deeply ingrained and are often the result of a lifetime of experience.

心理模型通常是根深蒂固的,而且会影响一生.

Romance is the big event of a lifetime , far more important than gambling.

人家终身大事, 比赌钱要紧得多呢.

Book now for the holiday of a lifetime!

为机会难再的假日现在立即预订!

It's the chance of a lifetime. You shouldn't miss it.

这是一生中难得的机会, 你不应错过.

The two were very much of a size.

两者尺寸几乎完全一样.

All the boys are much of a size.

这些男孩个头差不多一样.

They're both of a size, ie are the same size.

这两个大小相同.

The bottles are both of a size.

这两个瓶子大小相同.