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- His claim to ownership is invalid. 他的所有权是无效的。
- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- A passport that is out of date is invalid. 护照过期是无效的。
- His father is a bed-ridden invalid. 他父亲是个缠绵病榻的人。
- Her school work isn't quite up to the mark. 她的功课不大符合要求。
- He has been an invalid all his life. 他终身残废。
- That was just a lot of hot air what Mark said. 马克所说的不过是一大堆空话。
- The invalid gained colour under the doctor's care. 病人在医生的治疗下，脸色逐浙红润。
- War has left its mark on the country. 战争给该国留下了不可磨灭的痕迹。
- The invalid lay propped on the pillows. 那病弱者倚靠在枕头上。
- The public scandal left a black mark on his career. 这一尽人皆知的丑闻给他的事业留下了污点。
- How much do you know about the works of Mark Twin. 马克。吐温写的作品你知道多少？
- Happy anniversary, Helen and Mark! 海伦、马克，祝你们结婚周年快乐！
- Mark and Barbara are going together now. 马克与巴巴拉现在正在谈恋爱。
- Mark has lost his job and is worse off than ever. 马克的工作丢了，情况比以前更糟。
- The girl spent all her spare time to look after her invalid mother. 这个女孩把她所有的业余时间都用来照顾长期生病的母亲。
- He rubbed out the mark on his book. 他把他书上的记号擦掉了。
- Has she ever written a letter to Mark? 她曾经写信给马克吗？
- Everyone knows Tom as an easy mark. 大家都知道汤姆是个容易上当受骗的人。
- Do you feel up to the mark this morning? 今天早上你觉得怎么样。
