Part of the path had been washed away by the sea.

　　部分小路已被海浪沖壞。

　　First I applied a blue colour wash to the canvas.

　　我先在畫(huà)布上涂了一層藍(lán)色水彩。

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

　　墻上的牌子上寫著“請(qǐng)洗手”。

　　If your hands are dirty, go and wash them.

　　要是你的手臟了，就去洗一洗。

　　In the interests of hygiene, please wash your hands.

　　為了衛(wèi)生，請(qǐng)洗手。