difficult 高考四级六级

An experienced tutor helps students to solve difficult maths problems.

经验丰富的导师在指导学生解决复杂的数学问题。

My workmate, Sarah, always helps me with difficult tasks.

我的同事莎拉总是帮我解决难题。

The training corps finished the difficult drill.

训练兵团完成了这项艰巨的演习。

He could only shrug at the difficult question.

面对那个难题，他只能耸耸肩。

The process of adjustment to life in another country can be very difficult.

适应另一国家的生活可能会非常困难。

It is a difficult task to parallelize the existing sequential algor ithm.

对已有的串行算法进行并行化，是一项很困难的工作。

Assembling an able staff was more difficult than raising the funds to finance the venture.

召集一个有能力的小组要比筹资支持这次冒险更困难。

It’s a difficult place to live because of its climatic extremes.

该气候极端，很难让人生存。

We tried to console her when her mother died but it was very difficult.

"她母亲去世时我们设法安慰她,但很难奏效。"

It is difficult to see clearly at dust.

在黄昏时很难看清东西。

It’ll be difficult to get past the ticket collector without paying.

不付钱很难瞒过检票员的。

The complications of this machine make it difficult ot handle correctly.

这部错综复杂的器很难正确操作。

You have no conception at all of how difficult my life was in those days.

你根本想像不出那些日子我的生活有多艰难。

It is still difficult to develop indicators for many concepts used in social science.

为社会科学领域的许多概念确立一个指标仍然很难。

Experiment is done on the acid hydrolysis of titanium-columbite-tantalite ore difficult to decompose.

对难分解的钛钽铌矿的酸分解工艺进行了试验研究。

It is difficult to reach a consensus about electoral reform.

要就选举改革达成共识很困难。

It is difficult to convey the sheer complexity of the situation.

很难说清楚形势究竟有多复杂。

It's difficult to conceive of traveling to the moon.

难以想象到月球旅行会是什么样子。

The young surgeon contemplated the difficult operation of kidney transplant.

年青的外科医生为肾移植这一棘手的手术苦思冥想。

The world’s coldest continent, and the most difficult to reach, is Antarctica.

世界上最寒冷的和最难以到达的洲是南极洲。