at once

From Longman Dictionary of Contemporary Englishat onceat oncea) IMMEDIATELYimmediately or without delay Now, go upstairs at once and clean your room! When I saw him I recognized him at once. b) TIME/AT THE SAME TIMEtogether, at the same time I can’t do two things at once! Don’t all talk at once.RegisterIn everyday English, when people mean 'immediately', they usually say right away or, in British English, straight away rather than at once:I recognized him right away. → onceExamples from the Corpusat once• I can't do two things at once!• I can't understand what you're saying when you both talk at once.• You're trying to do too many things at once.• Everyone knew at once how serious the situation was.• Anyone know the answer? Don't all shout at once, put your hand up.• You can't have three weeks' holiday all at once, you'll have to take them separately.

单词	at once
释义	at once From Longman Dictionary of Contemporary Englishat onceat oncea) IMMEDIATELYimmediately or without delay Now, go upstairs at once and clean your room! When I saw him I recognized him at once. b) TIME/AT THE SAME TIMEtogether, at the same time I can’t do two things at once! Don’t all talk at once.RegisterIn everyday English, when people mean 'immediately', they usually say right away or, in British English, straight away rather than at once:I recognized him right away. → onceExamples from the Corpusat once• I can't do two things at once!• I can't understand what you're saying when you both talk at once.• You're trying to do too many things at once.• Everyone knew at once how serious the situation was.• Anyone know the answer? Don't all shout at once, put your hand up.• You can't have three weeks' holiday all at once, you'll have to take them separately.
随便看	extend 100 km yards etc from extend 100 km/30 yards etc (from something) extend an invitation extend by extend etc the scope of extend for extend out etc an olive branch extend out etc an olive branch to extend something for/by/until something extend something to somebody extend something to somebody/something extend the full width of extend the width of extend to extend to extend until extend/offer/hold out etc an olive branch (to somebody) extended extended coverage extended credit extended family extendere extension extension lead extensions