funnel bulb

例句：

1. 1. The engineer used a funnel bulb to clean the pipes.
   工程师使用漏斗状的灯泡来清理管道。
2. 2.The new light bulb is more efficient than the old one, but it's also more expensive.
   新灯泡比旧的更高效，但价格也更高。
3. 3.The funnel bulb was designed to fit snugly into the socket.
   漏斗状的灯泡被设计成可以紧密地插入插座。