extraoral口外的extraadj.额外的n.额外之物；临时演员adv.特别地extra-cellular polymeric substances胞外聚合物extra-high-temperature plasma jet[化] 超高温等离子体射流extracorporeal shock-wave lithotomy体外震波碎石, 体外冲击波碎石术extracellular potassium concentration细胞外钾浓度extra-curriculum English activities英语课外活动Extracellular signal regulated kinase细胞外信号调节激酶extracorporeal micropore blood filter体外循环微孔血液过滤器Extracellular space of nervous system神经系统细胞外间隙extra-high voltage line transformer超高压线变压器Extra--low Permeability Reservoirs特低渗油藏

1. Selling expensive [Manhattan] East Side residential properties earns her keep. Sculpting brings pleasure and extra income.
   她靠［曼哈顿］东区昂贵的高级住宅房地产买卖为生。雕塑则是她兴趣所在，并带来额外收入。
2. She decide to rent out a room to get extra income.
   她为获得额外收入决定租出一个房间。
3. Father, of course, provides a regular supply of pocket-money, but uncles and aunts are always a source of extra income.
   当然，父亲会经常供给一些零钱，但是叔叔和婶婶也总是额外收入的源泉。
4. She decided to rent out a room to get extra income.
   她为获得额外收入决定租出一个房间。