查询词典 once every three weeks

all at once: suddenly：突然

He once lived in Zambia.他曾经 (一度)住在赞比亚. | 3)all at once: suddenly 突然. | All at once the door opened.突然门开了.

CD-WOEA Compact Disc Write Once Extend Area：一次写入光盘扩充区

CD-WO Compact Disc Write Once 一次写入光盘 | CD-WOEA Compact Disc Write Once Extend Area 一次写入光盘扩充区 | CD-WORM Compact Disc-Write Once Read Many 一次写入多次读出光盘

How often am I likely to win on the football pools：我有多大可能赢得这场足球赌博

8."once in a blue moon"=once in a lifetime; very rarely 千载难逢... | ---How often am I likely to win on the football pools 我有多大可能赢得这场足球赌博. | ---Once in a blue moon, I should think. 我认...

once for all：一劳永逸地

all at once 突然;同时;一起 . | once for all 一劳永逸地 . | once in a while 偶尔,间或 .

once for all：只此一次

once again再一次 | once for all只此一次 | once in a while有时,偶尔

Once a fortnight：每兩星期一次

每星期一次 Once a week | 每兩星期一次 Once a fortnight | 每月一次 Once a month

They go for a picnic in the park once in a while：他们偶尔到公园去野餐

once in a while偶尔,有时,间或: | They go for a picnic in the park once in a while. 他们偶尔到公园去野餐. | once more再一次,又一次:

once in a way：偶尔

once in a blue moon 千载难逢地 | once in a way 偶尔 | once in a while 偶尔

once in a way：破例

once in a blue moon 千载难逢 | once in a way 破例 | once in a while 偶尔

once in a way：偶

once for all 只此一次 | once in a blue moon 千载难逢地 | once in a way 偶

liquid helium：液态氦

除了路径积分及应用在量子电动力学的研究成果之外,费曼其它重要的研究贡献还有1953年发表有关液态氦(liquid helium)超流体理论,以及1969年提出的成子(parton)模型.

fly wheel nut wrench：装拆飞轮螺母扳手

fly wheel magneto 飞轮式永磁发动机 | fly wheel nut wrench 装拆飞轮螺母扳手 | fly wheel pump 飞轮泵