jacket /n. ［C］短上衣；夾克衫
January /n. （［縮寫］Jan.）一月：January is the first month of the year. 一月是一年的第一個月。
Japan /n. 日本：Japan is an island country. 日本是一個島國。
Japanese /adj. 日本的；日本人的；日語的；-n. 日本人；日語
job /n. ［C］工作；任務：He has found a good job. 他找到一份好工作。/My job is to wash the dishes after dinner. 飯後我的任務是洗餐具。
join /v. 參（加）；加入；將…連接起來：Students can join different clubs in the university. 學生們可以參加學校裏不同的俱樂部。/He joined the army after he left the high school. 他離開中學後參了軍。/The guests joined us for dinner. 客人們加入我們吃飯。/The road joins the two villages. 這條路將兩個村莊連接起來。/Twenty students joined in the discussion. 20位學生參加了討論。
joke /n. ［C］笑話；玩笑；-v. 開玩笑：She told some funny jokes. 她講了一些有趣的笑話。/They played a joke on her. 他們和她開了個玩笑。/I was not serious，I was only joking with you. 我不是認真的，隻是和你開玩笑。
journey /n. ［C］旅行；旅程：Their journey to Paris was pleasant. 他們的巴黎之行很愉快。/The journey to the mountain was long and difficult. 到山裏的旅程漫長又艱苦。
juice［E］/n. ［U］［C］汁：He drank a glass of orange juice. 他喝了一杯橙汁。/The drink was a mix of ice，sugar and fruit juices. 那飲料是冰、糖和各種水果汁的混合物。
July /ln. 七月：The summer vacation starts in July. 暑假七月開始。
jump［E］/v. & n. ［C］跳：He jumped higher than some of the boys in the class. 他比班上的一些男生跳得高。/He jumped from one company to another. 他從一家公司跳到了另一家公司。/The driver jumped into his car and drove away. 那司機跳進車，開走了。/His heart gave a little jump. 他的心輕輕一跳。/She is good at the long jump. 她擅長跳遠。
June /n. 六月：The school will end in June. 學期在六月結束。
just /adv. 正好；僅僅；剛剛；隻是；盡管：It is just what I want. 這正是我要的東西。/It's not just a children's book. 這不僅僅是一本兒童書籍。/He has just left. 他剛剛離開。/I called just to say hello. 我打電話隻是問個好。/Any time you want my help，just tell me. 任何時候你需要我的幫助，盡管告訴我。
just now 剛才；前不久/just then 就在此時
just /adj. 公正的；正義的：A judge must be a just man. 法官必須是一個公正的人。/They fought a just war. 他們打了一場正義的戰爭。