226. jam  熟义：果酱

　　He jammed four apples in his pocket. vt.塞进

　　The accident jammed the main road for 2 hours. vt.堵塞

　　The are traffic jams every day on this road. n.堵塞

　　227．jacket n．（动物的）毛皮；马铃薯皮，公文套（熟义：短上衣）

　　He doesn't like eating potatoes boiled in their jackets．他不喜欢吃连皮煮的马铃薯。

　　He jammed four apples in his pocket．他往衣袋里塞了四个苹果。

　　The accident jammed the main road for three hours．这次事故使交通堵塞达三小时之久。

　　There are many traffic jams in Chongqing．重庆经常塞车。

　　228．Jar vt．/vi．发出刺耳声，剧烈震动，刺激（熟义：n．罐子）

　　Their loud voices jar on my nerves．他们高声尖叫，刺激了我的神经（使我听了很不舒服）。

　　I fell from the tree and jarred my back．我从树上摔了下来，震疼了我的背。

　　229．job  n．费力的事情 vt．做零工，做股票经纪；假公济私；承包（熟义：工作）

　　Waxing the car was quite a job．给小汽车打蜡真费事。

　　He jobbed his son into the position．他利用职权把儿子安排到那职位上去了。

　　Removing the table is quite a job. n.费力的事

　　He jobbed his son into the position. vt.做零工；假公济私

　　230．Jump  n．＆vi．（大幅度）上涨（熟义：跳）

　　Last week the price of goods jumped．上周物价急剧上涨。

　　231. just 熟义：adv. 正好；恰好

　　You are a just person. adj.公正的