sterilization

n. 使成不毛,断种,杀菌,绝育

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