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1·If the water's cloudy like that, it'll be hard to see anyone underwater.

如果水浑浊成那样，就很难看得到水下的人。《柯林斯英汉双解大词典》

2·A topic-based approach can be hard to assess in schools with a typical spread of ability.

在以典型的能力多元化为特征的学校里很难评估一种基于话题的教学方法。《柯林斯英汉双解大词典》

3·Food safety is another problem: it can be hard to know where the food comes from.

食品安全是另外一个问题：很难知道食品来源。

4·We form the good habit, which would be hard to break even if we wanted to break it.

我们形成了好习惯，即使我们想要摒弃它也很难。

5·I do get real speaking roles, but work can be hard to come by if you're not a popular star.

我的确拿到了有台词的角色，但如果不是人气明星，可能很难拿到这份工作。

6·It is also the key to understanding the thoughts and feelings that common people have, which may be hard to express.

它也是理解普通人难以表达的想法和感受的关键。

7·If the sea animals eat them by mistake, the rubbish will be hard to digest and stay in their stomachs forever.

如果海洋动物不小心吃了它们，垃圾很难被它们消化，会永远留在它们的胃里。

8·With such busy lives, it can be hard to try and find the time to work out.

在如此忙碌的生活中，很难找到时间去锻炼。

9·Touch screen may also be hard to use for people who is not familiar with computers.

对于不熟悉电脑的人来说，触摸屏可能也很难使用。

10·Patterns of childhood eating can be hard to break when we're adults, which may mean that kids of depressed moms end up dying younger.

童年的饮食模式在我们成年后很难打破，这也许意味那些有着抑郁的母亲的孩子们最后会早逝。