hold on to your hat的用法和樣例：
例句
- You must learn to sit tight if you don't want to fall off!
如果你不想讓自己掉下來的話，必須學會在馬背上坐穩。 - A man may build himself a throne of bayonet,but he cannot sit on it.
人或可為自己建樹一個刺刀的寶座，但不能於其上坐穩。 - You're liable to get cold if you are not careful.
你若不當心就有可能感冒。 - Take care not to cut off the buds.
當心不要把幼芽切掉。
