• n. 電燈泡；鱗莖；球狀物
• vi. 生球莖；膨脹成球狀

詞源同ball, 膨脹，鼓起，球。

bulb

bulb: [16] Bulb can be traced back to Greek bólbos, which was a name for various plants with a rounded swelling underground stem. In its passage via Latin bulbus to English it was often applied specifically to the ‘onion’, and that was its original meaning in English. Its application to the light bulb, dating from the 1850s, is an extension of an earlier 19th-century sense ‘bulbshaped swelling in a glass tube’, used from the 1830s for thermometer bulbs.

bulb (n.)

1560s, "an onion," from Middle French bulbe (15c.), from Latin bulbus "bulb, bulbous root, onion," from Greek bolbos "plant with round swelling on underground stem." Expanded by 1800 to "swelling in a glass tube" (thermometer bulb, light bulb, etc.).

1. A 40 watt bulb would be quite sufficient and would not obtrude.

40瓦的燈泡完全夠亮了，并且不會晃眼。

來自柯林斯例句

2. An efficient bulb may lighten the load of power stations.

一個節能燈泡也許就能減輕發電站的負荷。

來自柯林斯例句

3. This makes the total cost of the bulb and energy ￡27.

這使燈泡與電費合計為27英鎊。

來自柯林斯例句

4. The naked bulb was directly over his head.

裸露的燈泡正好在他的頭頂上方。

來自柯林斯例句

5. an unshaded light bulb

沒有燈罩的電燈泡

來自《權威詞典》