这些机器将来会需要备件和维修保养。In the future the machines will need spare parts and maintenance.我不得不支付房屋维修费用。I have had to pay for repairs to the house.数据记录仪还能迅速查明机械故障，减少维修次数。Data recorders also pin-point mechanical faults rapidly, re...
Those in mammalian cells, the cerebrosides and gangliosides, may perform similar functions.在哺乳动物细胞中脑磷脂和神经节苷脂可能执行同样的功能.Starfish contains different types of bioactive materials, such as proteins, enzymes, steroidal glycosi...
Martina Navratilova has never been afraid to speak her mind.玛蒂娜·纳芙拉蒂洛娃从来不害怕说实话。Tennis has Martina Hingus and Pete Sampras, the darlings of the courts.网球有玛提娜?辛吉斯和彼特?桑普拉斯这两名球场宠儿.Martina Cole was born and brought up in Esse...