He has a rather tenuous grasp of reality.

他对现实认识很肤浅。

We have no intuitive grasp of the immensity of time.

我们对时间的无限没有什么直观的认识。

The elements of physics are difficult to grasp.

物理原理是很难掌握的。

The officer managed to wrest the gun from his grasp.

警官最终把枪从他手中夺走了。

Be careful. Those grasping taxi-drivers might charge you too much.

"小心,贪婪的出租汽车司机会向你漫天要价的。"

It’s difficult to grasp the sheer enormity of the tragedy.

很难确切知道这场悲剧的严重程度。

The claws of a crab are used for grasping things,especially food.

螃蟹用钳抓东西,特别是食物。

"Once the principal contradiction is grasped, all problems will be readily solved."

"一旦抓住了主要矛,一切问题就迎刃而解。"

It grasps its victim in its forelegs and pierce it with its rostrum.

它用前腿抓住牺牲品，把喙刺入对方身体。

I didn't grasp the meaning of that enigmatic comment until much later.

直到后来我才领会个谜一般评论的含义。

It was a difficult concept to grasp, but Sam latched on very quickly.

是个难掌握的概，姆很快就理解了。

The climber grasped at the rope.

这个登山者试图抓住绳子。

I could not grasp her meaning.

我不懂她的意思。

Success is within our grasp now.

现在成功已经在望。

Grasp the operation indicatio reasonablely, raise obstetrics quality, cut down incidence rate of asphyxia neonatorum.

合理掌握手术适应证，提高产科质量，降低新生儿窒息的发生率。

At the time, I was too obtuse to grasp the true implications of her behavior.

时，我是样迟钝以至于不能领会她的行为的含义。

It is difficult for a non-Italian to grasp all the nuances of meaning.

一个不是以意大利语为母语的人很难把握所有这意义上的细微差别。

He grasped my arm.

他抓住我的手臂。

She grasped a great chance.

她抓住了一个极好的机会。

Grasp the general knowledge of maintaining the anti-chemical suit and the working priciple of forcible equiblast and air-compressed equipment.

掌握防化服保养常识，掌握强制送风和空气压缩装置的工作原理及维修常识。