作为通融，我方同意你方采用付款交单方式，但仅此一次次。
As a special accommodation, we agree to your D/P payment terms, but only for once.
人口红利仅此一次，失不再来。
每一个这样的瞬间都是你要接受的考验，仅此一次。
Every one of those moments is a test that you get to take one time and only one time.
毫无表情的离开，你积聚了所有你能积聚的仁慈，并且仅此一次你不反击。
Turning away expressionless, you muster all the spiritual benevolence you can, and for once you don't counter-attack.
4月9号，本周四，满月会出现在你的星座位置，一年中仅此一次。
This week, on Thursday the 9th, the only Full Moon in your sign all year will take place.
统一参加考试的时间是每年的6月7号至9号，而且每年仅此一次机会。
Everyone takes it at the same time — June 7 to 9 this year — and has only one shot.
通常参考书是不能拿出阅览室的，不过我们对你可以放宽规定，仅此一次。
Usually the reference books are not allowed to be taken out of the library. But we can stretch you, only once.
W3C举行的这次交流会是一个良好的开端，不过他们不会止步于仅此一次的交流。
The conversation the W3C is having is an excellent start, but they are not stopping with just a single conversation.
毕业旅行是一生仅此一次的经历，因为大家都还没有结婚，也没有工作职责的束缚。
A graduation trip is an only-once-in-a-lifetime experience because we are not yet married or are not bound by job obligations.
毕业旅行是一生仅此一次的经历，因为大家都还没有结婚，也没有工作职责的束缚。
A graduation trip is an only-once-in-a-lifetime experience because we are not yet married and are not bound by job obligations.
毕业旅行是一生仅此一次的经历，因为大家都还没有结婚，也没有工作职责的束缚。
A graduation trip is an only-ounce-in-a-lifetime experience because we are not yet married or are not bound by job obligations.
2008年，在曼哈顿的西区，我在海莱恩宴会厅看了一次艾米·怀恩豪斯的现场，仅此一次。
I saw Amy Winehouse play live only once, at the Highline Ballroom, on the lower west side of Manhattan, in 2008.
这事（结婚）通常是一辈子仅此一次。难道这还不够理由让我们为之不做保留，好好地庆祝一番吗？
'This usually only happens once in a life time. Isn't this reason enough to lavish and celebrate?'
这事（结婚）通常是一辈子仅此一次。难道这还不够理由让我们为之不做保留，好好地庆祝一番吗？
'This usually only happens once in a life time. Isn't this reason enough to lavish and celebrate?'
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