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1·The sign on the wall said 'Now wash your hands'.

墙上的牌子上写着“请洗手”。《牛津词典》

2·Go and wash your hands; they're absolutely black!

洗洗手去，你的手脏极了！《牛津词典》

3·Wash your hands as often as possible.

尽可能勤洗手。

4·Wash your hands before meals, or you may get ill.

饭前洗手，否则你可能会生病的。

5·You should wash your hands carefully, exercise, eat and sleep well.

你应该认真洗手，锻炼身体，吃好睡好。

6·Some doctors say that masks can stop the virus as much as 80%, but if you don't wash your hands often, it's no use wearing a mask.

医生称，口罩可以阻挡高达80%的病毒，但如果不勤洗手，戴口罩也没有用。

7·You need to wash your hands with soap and water before you eat, after you use the toilet, and after you touch animals, because your hands may carry viruses.

在吃饭前、上完厕所和接触动物后，你需要用肥皂和水来洗手，因为你的手可能会携带病毒。

8·Did you wash your hands and face?

你的手和脸洗过了吗？

9·Wash your hands with soap.

用肥皂洗手。

10·Wash your hands and face.

洗洗你的手和脸。