当我生日的时候 The time when my birthday ; When I get birthday ; When my birthday
当我过生日的时候 When I get birthday
在我七岁生日的时候 on my seventh birthday
我的生日 时
On my birthday
以上为机器翻译结果，长、整句建议使用 人工翻译 。
当我知道父亲会回来庆祝我的生日时，我满心欢喜。
I was flooded with joy when I knew my father would come back to celebrate my birthday.
youdao
我在她母亲四十岁生日时拍摄的。
I took it on her mother's fortieth birthday.
我把我爸爸在我生日时给我买的手表弄丢了。
I've lost the watch which my dad bought me on my birthday.
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