数学曾经是
Mathematics used to be
以上为机器翻译结果，长、整句建议使用 人工翻译 。
他的搭档Brin今年30岁，出生于莫斯科，他的父亲曾经是哪儿的一名数学教授。
His partner, Brin, 30, is a native of Moscow, where his father was a math professor.
youdao
他曾经是名教习，在那所小学教数学。
He used to be a teacher of maths in that primary school.
她教数学，也曾经是我的老师。
She teaches math and she was once my teacher, too.
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