fall through

落空,失败

fall down, fall for, fall for sb, fall guy, fall in, fall in love, fall in love (with), fall in love with, fall in love with sb., fall in with, fall into, fall into step, fall into sth, fall off, fall on one's knees, fall on/upon sb/sth, fall out, fall out of, fall over, fall over sb/sth, fall to, fall to (doing sth), fall to bits, fall to doing, fall under, fall under sth, fall-out, fallacious, fallaciously, fallacy, fallen, fallibility, fallible, falling, falling star, Fallopian tube, fallow, fallow deer, false, falsehood,