preserve的用法：
用作動詞 (v.)
用作及物動詞：
S+～+ n./pron.
We must preserve our natural resources.
我們必須保護自然資源。
The ship is equipped with special refrigerating devices to preserve food.
船上有特設的冷藏設備,用來保存食物。
It was his firm conviction that every effort should be made to preserve world peace.
他堅信應盡一切努力維護世界和平。