He said he would climb down and help them.

The feed reactants can be alkadienes, cycloalkadienes.

所加的反应物可以是二烯烃 、 环二烯烃.

This may well hold good for any limited series of related hydrocarbons.

这种关系在一些有关烃类的有限系列中可能适用.

Plants are sensitive to the simple olefins, particularly C 2 H 4.

植物对简单烯烃是敏感的特别是乙烯.

Hydrocarbous are thus trapped and cannot escape either updip or vertically.

因此烃类被圈闭,无论在上倾方向或垂直方向都不能散失.

They are sometimes difficult to differentiate from aromatic or olefinic absorptions.

有时它们就难于和芳香族或烯烃的吸收峰相互区别.

With the higher olefins, stabilization of the energetic intermediates occurs more easily.

在较高的烯烃情况下, 高能的中间物稳定作用更易出现.

Humic acids are usually regarded as polymers of aromatic compounds.

腐殖酸通常被看作是芳烃化合物的聚合物.

The benzenoid hydrocarbon are all nonclassical and, thus potentially aromatic.

苯环型烃都是非经典烃, 因此,可能是芳香烃.

These compounds range from hydrocarbons through various oxidation products.

这些化合物从烃类到多种氧化物.

During incomplete combustion some of the hydrocarbon fuel is cracked.

在不完全的燃烧中,一些烃燃料裂解.

Is the mountain climbable?

这座山能攀登 吗 ?

We climbed rather perilously down a rope-ladder to the boat below.

我们冒着相当大的危险沿着绳梯爬到了下面的船上。

The plane lifted off and climbed steeply into the sky.

飞机起飞并迅速爬升至空中。

As the plane climbed to 370 feet, it started yawing.

飞机攀升到370英尺时，开始偏航。

The FA Cup Final's audience climbed to 12.3 million.

观看英格兰足总杯决赛的观众人数增加到1,230万。

They climbed upward along the steep cliffs surrounding the village.

他们沿着村庄周围的陡峭悬崖往上爬。

We climbed up a winding track towards a mountain refuge.

我们沿着一条蜿蜒的小道爬向山上的一处避难所。

She climbed the staircase cautiously, holding fast to the rail.

她紧紧地抓着栏杆，小心翼翼地爬楼梯。

The girls hurried outside, climbed into the car, and drove off.

姑娘们匆忙跑了出来，爬进汽车，然后开车走了。

She had climbed onto the ledge outside his window.

她爬到了他窗外的窗台上。