late 12c., bone "petition," from Old Norse bon "a petition, prayer," from Proto-Germanic *boniz (cognates: Old English ben "prayer, petition," bannan "to summon;" see ban).
boon (adj.)
in boon companion (1560s), only real survival of Middle English boon "good" (early 14c.), from Old French bon (see bon).
实用例句
1. This battery booster is a boon for photographers.
这种电池充电器是摄影工作者的好帮手。
来自柯林斯例句
2. The new software will prove a boon to Internet users.
这种新软件将会对互联网用户大有益处。
来自《权威词典》
3. He was tall, dark and handsome, like a Mills and Boon hero.
他个头高大、皮肤黝黑、相貌堂堂，像通俗爱情小说的男主角。
来自《权威词典》
4. A car is a real boon when you live in the country.
在郊外居住,有辆汽车确实极为方便.
来自《简明英汉词典》
5. These machines have proved a real boon to disabled people.
