n.(尤指人類的)交媾；性交
The vagina receives the penis during coitus. 陰道在性交過程中容納陰莖。
Reaching orgasm long after the beginning of coitus is a common male dysfunction. 性交長(zhǎng)久以后才達(dá)到性高潮是男性常見的性功能障礙。
