PHRASAL VERB (通常指尚未结婚的两个人)发生性关系 If two people are sleeping together, they are having a sexual relationship, but are not usually married to each other. (通常指尚未结婚的两个人)发生性关系
I'm pretty sure they slept together before they were married. [VERBPREP.]
我敢肯定他们结婚之前就上过床了。
SYN have sex, have sexual intercourse, make love, do the business