一次就够了吗？
So great a vicissitude in his life could not at once be received as real.
他的生活中发生了如此巨大的变迁，他一时还无法相信是真的。
Driving once seemed to be a very human skill.
驾驶曾经似乎是一种非常人性化的技能。
Reputation is a treasure that, once lost, can never be won back.
名誉如同珍宝，一旦失去，再难获得。
The operation should be done only once for each mode.
此操作对于每个模式来说只进行一次。
All that was needed was one final push, and the enemy would be vanquished once and for all.
只需要最后一次挺进，敌军就将被彻底击败。
Oh, please, Dad, just this once don't be cheap.
哦，求求你，爸爸，就这一次，别小气嘛。
It was once thought that lead could be transmuted into gold.
有人曾经认为铅可以变成黄金。
Full details will be sent to you once your application has been accepted.
一旦您的申请被接受，全部的细节资料将寄给您。
Economic sanctions will be lifted once two-thirds of their forces have pulled out.
一旦他们的部队撤出2/3，经济制裁就会解除。
Can't you be nice to each other just this once?
难道你们就不能彼此客气哪怕一次？
Once opened, this product should be kept refrigerated.
本产品开封后应冷藏。
It made a refreshing change to be taken seriously for once.
总算有一次受到认真对待，这变化真是令人耳目一新。
Once its impurities had settled, the oil could be graded.
一旦杂质沉淀下去，油就可以定级了。
He couldn't reasonably be expected to pay back the loan all at once.
公平合理地讲，不可能指望他一下子归还全部借款。
Once more people are wired, the potential to change the mainstream media will be huge.
一旦更多人能上网，改变主流媒体的潜力将十分巨大。
Rain water was once considered to be good for the complexion.
雨水曾一度被认为对肤色有益。
Some were obviously unsuitable and could be ruled out at once. Others were borderline cases.
一些显然不合适，可以马上被排除。另一些勉强合格。
I can't do everything all at once—you'll have to be patient.
我不能万事一把抓呀。你可急不得。
I can't be in two places at once.
我不能同时身处两地。
They are hoping that once in office he can be persuaded to moderate his views.
他们希望他一上台后就能他说服，使他的观点变得温和些。
You can't be doing two things at once.
你不能同时做两件事。
Once again it will be the taxpayer who has to foot the bill.
这一次掏腰包的又得是纳税人。
It is a physical impossibility to be in two places at once.
同时身处两地在自然法则上是不可能的。
This football team was once reputed to be invincible.
这支足球队曾被誉为是不可战胜的。
Fast food was once thought to be recession-proof.
快餐曾经被认为是不受经济衰退影响的行业。
If the oval structures were once bacteria, they should be everywhere, too.
如果该椭圆结构曾是细菌，它们也该在所有区域出现。
And Italy's shape could not be forgotten once you had made the association.
一旦你把意大利的形状进行联想，你就不会忘记它。
Both the passages and the questions will be spoken only once.
短文和问题只念一次。
Both the passage and the questions will be spoken only once.
短文和问题仅读一遍。
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