bell-jar

基本解释

If air weren't admitted into the bell jar, the electric bell in the bell jar would not ring because of a lack of a medium.
如果我们不让空气进入铃罩，铃罩中的电铃一定会因缺少介质而不响了。
The Bell Jar is an autobiographical novel written by Sylvia Plath.
摘要《钟形罩》是普拉斯的自传体小说。
Trap one of these nightingales beneath a bell jar and time stops.
用罐扣住一只，时间便停止。
The chemist made a vacuum in the bell jar when he exhausted the air from it.
化学家抽走钟形瓶内的空气，使其成为真空。
Doctor Frank Kuhnemann of Bonn University has been trapping the ethylene in a bell jar.
波恩大学教授弗兰克·屈内曼一直在用钟形玻璃容器收集这种气体。

a bell-shaped glass cover used to protect flower arrangements or fragile ornaments or to cover apparatus in experiments, esp to prevent gases escaping