sexual intercourse

常见例句

They were told to use the gels twelve hours before sexual intercourse and again within twelve hours after sex.
Virginity is that bodily state that predates an act of sexual intercourse and therefore, at least for most of Milton's contemporaries, that is the bodily state that predates marriage.
童貞就是身躰還沒有進行過性行爲,因此至少對很多彌爾頓的同代人來說，那種身躰狀態是要一直保畱到結婚的。
耶魯公開課 - 彌爾頓課程節選

The assitant attorney general started to say, no, no, just sexual intercourse is at issue.
NPR: Slate's Jurisprudence: Kansas Sex Ban Challenged
According to medical reports, the incidence of pregnancy for one-time unprotected sexual intercourse is 5%.
FORBES: Republican Senate Nominee Todd Akin: Victims Of "Legitimate Rape" Don't Get Pregnant
For example, how many times have you heard that sexual intercourse is a great way to burn calories?
FORBES: Sorry, You Can't Sex Yourself Thin (But You Can Kill Your Sex Life with Fat)