s.  蚂蚁与蜜蜂是勤劳的昆虫。不适合
    7. We found a colony of ants under the tree.  我们发现树下有一群蚂蚁。不适合
    8. The young ants are wrapped in silk cocoons.  幼蚁裹在丝茧里面。
    16. appointment [?'p?intm?nt]
    n. U任命,选派;C职位;C约会,约定,约
    常用短语
    1. power of appointment
    财产处理权,财产指定权
    参考例句
    1. It striked on me that I have an appointment this morning.  我突然想起今早有个约会。
    2. I must congratulate you on your appointment as a manager .  我一定得祝贺您荣任经理之职。
    3. She gobbled down her lunch and hastened to her appointment.  她大口吃完午饭便匆忙赴约去了。
    4. She wants to change her appointment from Tuesday to Friday.  她想把她的约会从星期二改到星期五。
    5. She informed him that he has a two o'clock appointment.  她通知他两点有个会议。
    6. A woman who holds a peerage by descent or appointment.  有爵位的女人一个由世袭或任命而获贵族爵位的女人
    7. A man who holds a peerage by descent or appointment.  一个由世袭或任命而获爵位的男人
    8. I 'd like to make an appointment to see the dentist. 我要预约去看牙医。
    17. arithmetic [?'riθm?tik]
    n. U算术
    a. 算术的
    词形变化
    比较级:ar?ith?met?ic also ar'ith?met'i?cal
    名 词:a?rith'me?ti'cian
    副 词:ar'ith?met'i?cal?ly
    常用短语
    1. arithmetic mean 算术平均数(总和除以个数)
    2. arithmetic progression 等差级数
    3. binary arithmetic operation 二进制算术运算,二进制运算,二进制运算操作
    4. arithmetic operation 【计】 算术运算【经】 算术运算
    参考例句
    1. Some hard problems in arithmetic bewilder me.  算术上一些难题使我糊涂。
    2. Arithmetic has to be hammered into that boy's head.  算术得往那男孩脑子里灌才行。
    3. I do the arithmetic homework for her.  我替她做算术课家庭作业。
    4. The arithmetic searching for oil is stark.  寻找石油的等差级数是严格的。
    5. That problem in arithmetic still sticks me.  那道计算题还在难着我。
    6. You need further instruction in arithmetic.  你需要更多的算术教育。
    7. She grounded her pupils well in arithmetic.  她给自己的学生打下良好的算术基础.
    8. He is good at mental arithmetic.  他擅长心算。
    18. arrow ['?r?u]
    n. 箭,箭头计号;
    词形变化
    时 态:arrowed, arrow?ing, arrows
    参考例句
    1. The arrow on the map indicates where the accident happened.  图上的箭头指示事故发生的地点。
    2. The direction of a force can be represented by an arrow.  力的方向可用箭头表示
    3. A good archer is not known by his arrows But his aim.  神箭手因其射中靶子而非因其箭而闻名
    4. He saw a series of white arrows painted on the road.  他看见马路上画有一连串白色箭头。
    5. He sent the arrow forthright toward the target.  他把箭径直射向目标。
    6. The hunter lodged an arrow in the tiger's head.  猎人一箭射中老虎的头。
    7. The afternoon sun emptied down invisible arrows.  下午的骄阳正倾射出一支支无形的光箭。
    8. The natives use poisoned arrows to kill big game.  土着用毒箭射杀大猎物。
    19. ashamed [?'?eimd]
    a. 羞愧的,惭愧的
    参考例句
    1. You may come to be ashamed of what you have done today.  有一天你可能会为你今天干的事情感到羞愧的。
    2. He felt too ashamed to go back home to see his elders.  他觉得无颜见江东父老。
    3. You made me feel ashamed of myself.  你让我感到羞愧
    4. I am half ashamed to confess it.  承认这事我真有些羞愧。
    5. She was ashamed of having failed in the examination.  她因考试不及格而感到羞愧。
    6. I must admit to feeling ashamed of my conduct.  我得承认因自己的行为而感到羞惭。
    7. He was somewhat ashamed of his own unseemliness.  他有些自惭形秽。
    8. Don't do that which you will be ashamed of later.  别做那件以后会让你为耻的事。
    20. aside [?'said]
    ad. 在旁边,撇开不谈
    n. 独白,旁白
    参考例句
    1. We'll leave aside the problem of agency until next week.  我们暂时把代理问题搁置到下周
    2. urgent problems that society can no longer shunt aside.  社会再也无法回避的紧急问题
    3. The UN first set aside World Water Day in 1993.  联合国早在1993年就设立了世界水日。
    4. The old car has been set aside and is out of use.  那辆旧车已被搁置一旁不再使用了。
    5. The saleswoman set aside the coat for the fat lady.  女售货员给这位胖女士