sterilize

vt.使不结果实；使绝育；使无效；杀菌

stepbrother, `stepsister, stepchild, stepfather, stepfather, `stepmother, stepparent, steppe, stepping-stone, stepson, `stepdaughter, stereo, stereo-, stereophonic, stereoscope, stereoscopic, stereotype, stereotyped, stereotyping, sterile, sterility, sterilization, sterilization, sterilisation, sterilize, sterilise, sterling, stern, sternly, sternness, sternum, steroid, stertorous, stertorously, stet, stethoscope, stetson, stevedore, stew, steward, stewardess, stewardship, stewed, Sth, stick,