1670s, "glass filled to the brim;" perhaps from notion of bumping as "large," or from a related sense of "booming" (see bump (v.)). Meaning "anything unusually large" is from 1759, slang. Agent-noun meaning "buffer of a car" is from 1839, American English, originally in reference to railway cars; 1901 of automobiles (in phrase bumper-to-bumper, in reference to a hypothetical situation; of actual traffic jams by 1908).
双语例句
1. Hey, I know what, I'll get a bumper sticker printed up.
嘿，有了，我会找人印刷一些保险杠贴纸。
来自柯林斯例句
2. In the state of Iowa, it's been a bumper year for corn.
艾奥瓦州今年玉米大丰收。
来自柯林斯例句
3. The painting represents the scene of a bumper harvest.
这幅画描绘了丰收的景象.
来自《简明英汉词典》
4. A bumper wheat harvest is anticipated [ expected ] this year.
