all at once 1：突然2. 同時,一起(可與at once 互換,但有強調(diào)之意)

in the front of 在......前部 | 5. all at once 1. 突然2. 同時,一起(可與at once 互換,但有強調(diào)之意) | at once 1. 立刻, 馬上2. 同時,一起

all at once: suddenly：突然

He once lived in Zambia.他曾經(jīng) (一度)住在贊比亞. | 3)all at once: suddenly 突然. | All at once the door opened.突然門開了.

CD-WOEA Compact Disc Write Once Extend Area：一次寫入光盤擴充區(qū)

CD-WO Compact Disc Write Once 一次寫入光盤 | CD-WOEA Compact Disc Write Once Extend Area 一次寫入光盤擴充區(qū) | CD-WORM Compact Disc-Write Once Read Many 一次寫入多次讀出光盤

once every four years：每四年一次

once a day 每天一次 | once every four years 每四年一次 | once more 再次

once every four years：每四頃一次

once a day天天一次 | once every four years每四頃一次 | once more再次

once in a while & every once in a while：偶爾

on occasion間或,有時 | once in a while & every once in a while偶爾 | be at one's service隨時提供服務(wù),隨時效勞

once a week：一周一次

自然清新一周一次(once a week) 人體周效凈味巾自然清新一周一次(once a week) 人體周效凈味巾自然清新一周一次(once a week) 人體周效凈味巾自然清新一周一次(once a week) 人體周效凈味巾自然清新一周一次(once a week) 人體周效凈味巾自

Once in a while; Once too often; Once in a blue moon：有時候;常常;很少

Once in a blue moon. 千載一時... | Once in a while; Once too often; Once in a blue moon 有時候;常常;很少 | One boy is a boy, two boys half a boy, three boys no boy. 一個和尚挑水喝,兩個和尚抬水喝,三個和...

once-famous once-popular：一度

neur(o)-神經(jīng)的 neurology neurobiologist neurosurgeon | once- 一度...... once-famous once-popular | pan- 泛 pan-American pan-Arab pan-continental

once-famous once-powerful once-popular：一度

neur(o)- 神經(jīng)的 neurology neurobiologist neurosurgeon | once- 一度 once-famous once-powerful once-popular | pan- 泛... pan-American pan-Arab pan-European