sextol[化] 甲基环己醇sexn.性别；性欲；性vt.区别 ... 性别；引起 ... 性欲sex identification of embryos胚胎性别鉴定Sex-linked thrombocytopenia性连锁的血小板减少症sex chromosome mosaic syndrome性染色体嵌合型综合征sex hormone-binding globulin性激素结合球蛋白sexlinked dominant inheritance性连锁显性遗传Sex and pornography Businesses色情行业sex debars from holding office性禁锢sexagesimalmeasure of an angle角的60进制度量sex linked ichthyosis vulgaris性连锁遗传寻常鱼鳞病sex-linked macular dystrophy伴性黄斑营养不良

1. I do some voluntary work at the local hospital.
   我在当地医院从事一些义务性工作。
2. The part of a factory housing the machines where the productive work is done.
   工厂里用机器从事生产性工作的房屋。