e v.投保
=make a contract that promises to pay a sum of money in case of accident,damage,loss,etc.
Insure sb/sth against给某人或某物保险，以防 万一
wave.
shiver v.打颤，发抖=tremble
整体的颤抖用shiver,部分的用tremble --His hands are trembling. --His trembling voice betrayed his secret. --He is shivering with cold. shudder 因为寒冷害怕等因素导致的全身抖动,
agonizing a.精神紧张的，提心吊胆的
agonize v.使精神紧张，使极度痛苦 ---This frustration agonized him. agonized 感到提心吊胆的 agony n.=great pain 常用介词in ---At the news he is in an agony of joy. Agony column An agonizing delay/decision He agonized for months over the thought of
his mother’s illness.
perch vi.位于（高处）
be on the high position perch on 栖息 ---A bird perched on the branch of the tree at
the moment. ---The little village perches among the hills. The hotel perched precariously on a steep
可替换shiver
Haul---pull---drag
Haul v.拖曳=pull with effort our force强调用力 拉
--They hauled the boat up the beach.
Rim---border---boundary--verge
Pacific Rim The border or edge of an object On the verge/rim of a war Gold-rimmed spectacles
--He regained/recovered his enthusiasm. restore 恢复(健康,原状)vt --He has been restored.
--He has recovered.不及物 heal vt.治愈（创伤，伤口） --His wound has
healed.
annual a.一年一度的 What is your annual salary? The meeting is held annually. Biannual anniversary teenager n.(13至19岁）的青少年 capsize vi.(船)翻 --The ship capsized because of the rough
ensure:保证，确保，宾语可以是物 --Hard work can ensure our success.
guarantee:担保 --I can guarantee the watch for ten months.
Luckily, he had insured himself against long term illness.
—Employer must insure their employees against accident.
Insurance n.保险 Insurance company 保险公司
同意词：
assure v.向……保证，使确信，它的宾语一定 是人 --I assure you that I’ll bring your happiness.
hillside. She perched herself on a tall stool in the bar.
precariously adv.危险地，不稳固地
My house is insured against fire.
recover
① vi.使得到补偿，弥补=make up for ,compensate for ② vt,康复 recover from
--Nothing can recover our health. 同义词： regain:经过努力而获得什么 --regain one‘s courage 重新获得勇气 recover our courage 恢复勇气
admittedly adv.公认地=we are admitting that --Admittedly he is a great person.
purchase vt.买（比buy要正式，主要用 于书面语，还可以是名词）
--Can you purchase freedom with money? --Yesterday I bought a tie, that looks terrible. purchase money 买进价格 purchasing power购买力 not worth a day’s purchase.危在旦夕 --His life is not worth a day’s purchase. The slave purchased freedom with their blood. Agreement for sale and purchase