They react with many metals to form a salt and give off hydrogen.

The apples give off a very sweet smell.

这些苹果散发出非常香甜的味儿.

Many material, if given the proper energy, such as by heating , give off light.

许多材料在得到适当的能量(比如在受到加热)时, 都会发射出光.

If ( it is ) burnt, rubber can give off a poisonous gas.

橡胶如果燃烧起来, 会发出有毒气体.

The moon, for example, does not give off any light of its own.

举月亮为例, 它自身并不发光.

These gas lasers give off a continuous beam.

这种气体激光器产生连续不断光束.

Many household products give off noxious fumes.

很多家用产品散发有害气体。

The flowers give off a heady scent at night.

这些花晚上散发出醉人的芳香.

The back of our house give on to fields.

我们房子的后门通向田野.

The surveyor will use a lap-top computer to give on the spot advice.

检测员会用一台手提电脑当场给出意见。

Does arm ache did the issue give on bone?

胳膊疼是不是骨头上出了问题?

Most of us will a hard time thinking of what gift to give on special events.

为特殊的日子挑选礼物对许多人来讲是件很痛苦的事.

The bedroom windows give on to the street.

卧室的窗户面向街道。

Employers agreed to pay the full wage hike they promised to give on April 1 st.

雇主同意给员工全额涨薪,承诺4月1日支付.

He's 60 years old, give or take a year.

他六十岁, 出入至多一岁.

It's three hundred miles to Edinburgh , give or take ten.

到爱丁堡大约有300英里.

But December 21 , 2012 , ( give or take a day ) was nonetheless momentous to the Maya.

不过, 对于玛雅人来说, 这一天将是非常重要的日子.

The man is 60 years old, give or take a year.

这人大约六十岁, 估计与实际年龄相差不过一岁左右.

It is a mile away , give or take a few hundred yards.

有一英里或者几百码远.

It will take an hour, give or take a few minutes.

需要一小时左右.

There must have been two hundred people there, give or take a few.

那里一定有200人, 估计与实际数字相差无几.