The traditional backpack with a difference ─ it's waterproof.

　　這個(gè)跟傳統(tǒng)背包不同——它防水。

　　Breathable, waterproof clothing is essential for most outdoor sports.

　　大多數(shù)戶外運(yùn)動(dòng)衣服必須透氣且防水。

　　My watch is shockproof and waterproof.

　　我的手表防震防水。

　　Do you have any proof of identity?

　　你有身份證明嗎？

　　The sea wall was not proof against the strength of the waves.

　　防波堤擋不住海浪的力量。

　　He is living proof that not all engineers are boring.

　　并非所有工程師都缺乏情趣，他就是活生生的例子。