a bubble in water

• 水里的气泡

a bubble in water的用法和样例：

例句

1. Gas bubbles in the ash left holes that store large amounts of water for plant use.
   火山灰内的气泡会留下空洞，它可以贮藏大量水份供植物利用。
2. Kenneth, if it was not for that rancid bubble, I would not be here today.
   如果不是那腐臭的气泡，我现在不会在这里。