strain 四级考研雅思托福

The difference in physiological characteristics between initial strain and its oxytolerant strain was not found.

经生理鉴定证明，驯化后的菌株与未经驯化的菌株相比，生理学特性没有发生化。

Their cheerfulness seemed rather strained and artificial.

他们的快乐表情看上去很勉强而做作。

[with obj.]these strains agglutinate human red cells.

这些菌株使人类的红细胞凝集。

He realized that she was too strained.

他意识到她太紧张了。

Several sailors were straining at the rope.

好几个水手在拼命地拉绳子。

Strain at a gnat and swallow a camel.

小事拘谨,大事糊涂。

He has a strain of melancholy in him.

他有点忧郁。

The strain on the rope made it broken.

绳子因受力过大而断了。

Perfect twopenny pharmacy. Conform to an strain it!

您还未获得勋章，多多努力吧,本家族决不淹没人才!

If the eyes are severely strained, they become bloodshot.

如果眼睛过于疲劳就会充血。

The abstraction of carotene from Rhoddoseudo-monas Palustris strain B.

类胡萝卜素的提取进行了研究。

The usual bipyramid-shaped parasporal bodies occur in Lepidoptera-active strains.

一般双金字塔伴胞体成于鳞翅目活性株。

By careful selecting and roguing the strain was evolved.

这个品种是经过小心的选择与淘汰才培育出来的。

There is someone straining his ears at the door.

门边正有人在竭力听着什么。

The newcomers lacked immunity against local strains of the disease.

新来的人对这一疾病在当地的几种类型缺乏免疫力。

The dog strains at the leash, eager to be off.

狗拼命地扯拉皮带, 想挣脱开去。

Lighting, heating, and airconditioning in the skyscrapers strain energy supplies.

大楼里的照明,暖气以及空造成能源供紧张。

I stood, straining eyes and ears for the faintest stir.

我站着，睁大眼睛，竖起耳朵，捕捉最细微的响动。

The wound opened under the strain and blood oozed out.

"伤口崩开了,血流了出来。"

He strained every sinew to help us, but didn’t succeed.

他尽全力帮助我们,可是没有成功。