on the occasion
值此…之际;在那时;在…之际
[同近义词]
at that time , at that point
eg.
On the occasion of the New Year, may my wife and I extend to you and yourwife our sincere greetings.
值此新年之际,我太太和我谨向您和您的夫人致以真诚的祝贺。
What you said on the occasion was not appropriate.
在这种场合你说这样的话是不相宜的。
On the occasion of my fortieth birthday, my husband surprised me with twotickets for a five day Caribbean cruise.
在我四十岁生日那天,我丈夫给了我一个惊喜——两张加勒比五日游的票。
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