mend n. 改进，改良，补丁，修理 v. 修改，改进
例句：It took her three hours to mend her bicycle.
她修理自行车用了三个小时。
maintenance n. 维护，保持，生活费用，扶养
例句：If you have trouble with your car, you can refer to the maintenance manual, which gives diagrams and instructions for repairing your car.
如果对车有什么问题的话，可以看维护手册；维护手册将向您提供修理汽车所需的图表和说明。
amend v. 修订，改进，改正
例句：The constitution was amended in 1920 to give women the right to vote.
美国宪法于一九二0年修订，赋予妇女投票权。
amends n. （对毁坏，损坏的）赔偿，赔礼
例句：I want to make amends to my friend for breaking her precious vase.
我打破了朋友的贵重花瓶，想赔偿她的损失。
commend vt. 称赞，表扬，推荐，委托，吸引
例句：We should commend good people and good deeds.
我们应当表扬好人好事。
Donna commended the child to her sister's care.
唐娜将孩子委托给她妹妹照管。
comment n. 注释，评论，意见 vi. 注释，评论
例句：Wesley made several favorable comments about their candidate.
卫斯理对他们的候选人发表了一些有利的评论。
commentary n. 注释，解说
例句：The tour guide gave a running commentary from the front of the carriage.
导游在车厢的前部向游客作连续的现场解说。
recommend v. 推荐，介绍，劝告，托付
例句：Can you recommend me some new books on Internet?
你能推荐一些有关因特网的新书给我吗？
recommendation n. 推荐，介绍（信），劝告，建议
例句：I bought this book on the recommendation of a friend.
我由于一位朋友推荐而买了这本书。
