Such a conclusive evidence is hard to be explained away.

如此确凿的证据是很难巧辩的。

It is hard to prevent concrete from creeping.

很难防止水泥变形。

It is hard to work efficiently in such a confined space.

在这样狭小的空间里很难提高效率。

It takes years of hard work to compile a good dictionary.

编一部好词典需要多年的艰苦。

Seeing that he was a hard worker, he achieved a lot.

他辛勤, 因而取得了不少成就。

He abbreviated so much that it was hard to understand his article.

他的文章缩写词使用太多，令人费解。

We must work hard to acquire a good knowledge of English.

我们必须用功学习才能精通英语。

You must learn to accustom yourself to hard work.

你必须学会习惯于艰苦的。

He braked hard and narrowly avoided a parked van.

他使劲踩剎车，险些撞上一辆停着的面包车。

The biology of bacteria can be quite hard to understand.

细菌生物学有时会很难理解。

Better work as hard as an ant than lead a parasitic life as a sparrow.

宁做蚂蚁腿,不做麻雀嘴。

Babesiosis is spread by members of the family Ixodidae, or hard ticks.

犬巴贝斯虫是由硬蜱科的蜱类传播的疾病。

Baskets are notoriously hard to make work, especially if they include an inconvertible currency.

众所周知，一篮子货币很难发挥用，特别是如果其中包含不可兑换的货币的话。

A hard blow on the ear deafened him for life.

耳朵上挨的一记猛击使他耳聋了一辈子。

The show marked the culmination of months of hard work.

这场演出标志着几个月艰辛的最终成果。

This cynicism makes today’s young people hard to predict.

这种愤世嫉俗的人生观使当今的年轻人难以揣摩。

After hard fighting,the defenders were still masters of the city.

守军经过奋战仍然控制着城市。

It is hard for me to reject religious beliefs.

要我抛弃自己的宗教信仰是困难的。

Optimism made him alive through the hard days.

乐观主义使他在艰难的岁月里活了下来。

Its pilot has to pedal hard to get it into the air.

驾驶员不得不使劲踩踏板才能使它飞上天。