为了卫生，请洗手。

In the interests of hygiene, please wash your hands.

洗洗手去，你的手脏极了！

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

丹挽起袖子洗了洗手。

Dan rolled up his sleeves and washed his hands.

墙上的牌子上写着“请洗手”。

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

接触食物前尤其对洗手不能有半点马虎。

Be particularly fastidious about washing your hands before touching food.

她起身在洗手池里吐了起来。

She got up and was sick in the handbasin

便后要洗手。

Wash your hands after using the toilet

饭前不洗手，不卫生。

It is unsanitary to eat without washing one's hands.

饭前洗手。

Wash your hands before meals.

饭前洗手洗脸是好习惯。

It's a good habit to wash up before a meal.

等等我，我必须洗洗手。

Wait for me. I have to clean up.

那男孩已养成饭前洗手的习惯。

The boy has got into the habit of washing his hands before meals.