sink and drown的区别

sink 是沉 的意思，而drown则是淹没的意思，区别可以从以下例子看出：

When I saw her, she is sinking in the water, fortunately there is a brave man rescue her, avoid drown into the water. 当我看到她的时侯，她正沉入水中，幸好有勇者救她，免得她淹没在水里。