1.
It was a tough decision.
要做这个决定是很难的，
2.
It would be very difficult indeed to "establish" it "firmly"!
要“确立”是很难的哩！
3.
I'm telling you, the test will be tough.
我告诉你考试会很难的。
4.
He found it difficult to succeed.
他觉得成功是很难的。
5.
The Chinese language is very difficult.
汉语是很难（学）的。
6.
Such a universal genius is hard to come by.
这样的全才是很难得的。
7.
Yes. I have an upset stomach.
是的，我的胃很难受。
8.
I am quite close about money.
我在钱上是很困难的。
9.
holding lane
很难投出曲球的球场
10.
The difficulty of the examination staggered him.
考试的困难使他很发愁。
11.
His breath smells.
他呼出的气很难闻。
12.
Your breath smells.
你呼出的气很难闻.
13.
It is difficult to understand comprehend his Behavior
很难理解他的行为。
14.
It's hard for me to make out what he was saying.
我很难理解他说的话。
15.
Your meaning is too dark for me.
你的意思我很难理解.
16.
She had great difficulty in understanding him.
她很难理解他说的话。
17.
It was a long trudge up the hill.
那段上山的路很难走。
18.
It's a long hard slog up the mountain.
上山的这段路很难走.