1.come across 偶遇；偶然发现

I came across a group of children playing.
我碰到一群正在玩耍的小孩。

We like to identify and celebrate women's success whenever we come across it.
每当女性取得成功，我们都会表示认同并予以颂扬。

2.rather than 而不…，与其…倒不如…

His film is propaganda rather than documentary.
说他的影片是政治宣传而不是纪录片。

He is an explorer rather than a sailor.
与其说他是一个海员，不如说他是一个探险者。