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1·It is hard to believe that she's only nine.

很难相信她只有九岁。《牛津词典》

2·It's always hard to speculate about the future.

推测未来总是很难的。《柯林斯英汉双解大词典》

3·Lindsay, like his films, is hard to categorize.

就像他演的电影难于归类一样，很难说林赛属于哪一类演员。《柯林斯英汉双解大词典》

4·The mechanics work hard to keep the helicopters airworthy.

机修工们为了保障直升机的适航性而努力工作着。《柯林斯英汉双解大词典》

5·It's hard to make farming pay.

种庄稼获利很不容易。《牛津词典》

6·It's pretty hard to explain.

这事很难解释清楚。《牛津词典》

7·I find that hard to believe.

我对此感到难以相信。《牛津词典》

8·I find him very hard to stomach.

我觉得很难和他相处。《牛津词典》

9·It's hard to see how they can lose.

很难理解他们怎么会输。《牛津词典》

10·I find it hard to blow-dry my hair.

我感到给我的头发吹风很困难。《柯林斯英汉双解大词典》