vt. 增加，补充，附带说明，把…包括在内；vi. 增加，做加法，累积而成，扩大；n. 加法，加法运算，（一篇报道的）补充部分；
[例句] Add the grated cheese to the sauce...
[例句] Since 1908, chlorine has been added to drinking water...
n. 部分，份额，比例，匀称，面积，规模；
[例句] A large proportion of the dolphins in that area will eventually die...
[例句] A proportion of the rent is met by the city council.
vt. 保护，保持，保存，腌制食物，防腐处理；vi. 保鲜，保持原状，做蜜饯，禁猎；n. 蜜饯，防护用品，禁猎地，独占的事物（或范围）；
[例句] We will do everything to preserve peace.
[例句] ...an effort to fit in more students while preserving standards.
vi. 受痛苦，受损害，变糟，变差；vt. 忍受，容忍，容许，遭受；
[例句] Within a few days she had become seriously ill, suffering great pain and discomfort...
[例句] Can you assure me that my father is not suffering?
n. 桩，刑柱，股份，（在公司、计划等中的）重大利益；vt. 用桩支撑，以…下注[打赌]，用桩区分，界分；
[例句] The tension was naturally high for a game with so much at stake...
[例句] At stake is the success or failure of world trade talks...
n. 时期，（一段）时间，学时，句号；adj. 具有某个时代特征的，（关于）过去某一特定历史时期的，（家具、服饰、建筑等）某一时代的；
[例句] This crisis might last for a long period of time.
[例句] ...a period of a few months.
n. 结论，结局，断定，决定，推论；
[例句] Over the years I've come to the conclusion that she's a very great musician...
[例句] I have tried to give some idea of how I feel — other people will no doubt draw their own conclusions.
v. 希望，想要，祝愿；n. 愿望，希望，希望的事 ，祝福；
[例句] She was sincere and genuine in her wish to make amends for the past...
[例句] Clearly she had no wish for conversation...
adj. 自然的，物质的，天生的，不做作的；n. 自然的事情，（生来的）白痴，[乐]（风琴等的）白键；
[例句] It is only natural for youngsters to crave the excitement of driving a fast car...
[例句] It is only natural that he should resent you...
n. （尤指吸引人的）相貌( look的名词复数 )，眼神，样子；v. 看，瞧( look的第三人称单数 )，注意，面向，寻找；
[例句] I looked down the hallway to room number nine...
[例句] She turned to look at him...
n. 差别，差异，[数]差数，差额，意见分歧，特色；vt. 辨别，区分；
[例句] That is the fundamental difference between the two societies...
[例句] There is no difference between the sexes.
n. 萎靡不振，沮丧，下陷处，坑，衰弱，减缓；
[例句] Mr Thomas was suffering from depression...
[例句] I slid into a depression and became morbidly fascinated with death.
adj. 某一，必然的，已确定的；pron. [动词用复数]某些；
[例句] She's absolutely certain she's going to make it in the world...
[例句] We are not certain whether the appendix had already burst or not...
vt.& vi. 碰撞，冲撞，颠簸；vi. 颠簸着前进；n. 碰撞，撞击，肿块，隆起物，鹭鸶的叫声；adv. 突然地，猛烈地，扑通一声；
[例句] They stopped walking and he almost bumped into them...
[例句] There was a jerk as the boat bumped against something...
n. 脑，智慧，聪明的人，（群体中）最聪明的人；vt. 打破…的脑袋，打…的头部；
[例句] Her father died of a brain tumour.
[例句] Once you stop using your brain you soon go stale...
adj. 断开的；v. （打）开( open的过去式和过去分词 )，开始，睁开，启动；
[例句] He opened the window and looked out...
[例句] The church doors would open and the crowd would surge out.
vt.& vi. 刺，扎，戳，刺伤，刺痛；n. 刺，扎，刺伤，刺痛，尖形器具；
[例句] Prick the potatoes and rub the skins with salt...
[例句] He pricks holes in the foil with a pin.
vt.& vi. 扔，抛，（使）摇荡，摇匀，掷硬币决定；n. 掷硬币决定，向上甩头，猛仰头（尤指表示恼怒或不耐烦），（尤指比赛或游戏中）投掷；
[例句] He screwed the paper into a ball and tossed it into the fire...
[例句] He tossed his blanket aside and got up…
n. 前景，期望，眺望处，景象；vi. 勘探，勘察，（矿等）有希望，有前途；vt. 找矿，对…进行仔细调查；
[例句] Unfortunately, there is little prospect of seeing these big questions answered...
[例句] The prospects for peace in the country's eight-year civil war are becoming brighter...
n. 水平，平面，飞机，木工刨；adj. 平的，平坦的；vt. 用刨刨平，小船等擦着水面疾驶；vi. 鸟滑翔；
[例句] He had plenty of time to catch his plane...
[例句] Her mother was killed in a plane crash.