n.異體受精；異花授粉

=cross-fertilization（美）.

It is rash to cross the street without looking both ways. 不朝兩邊看看就穿馬路是莽撞的。

Cross and angry words in family grate upon the ear. 不高興與生氣的話在一個(gè)家庭里令人不愉快。

A mule is a cross between a horse and an ass. 騾是馬和驢交配而生的雜種。

The Red Cross dealt out food to hungry soldiers. 紅十字會(huì)把食物分發(fā)給饑餓的士兵。

This cross marks the spot where she died. 這個(gè)十字符號(hào)標(biāo)明她死去的地點(diǎn)。

He made expiation for our sins on the cross. 他在十字架上為我們贖了罪。