crazy
疯狂的（=mad）；着迷的
Bill went crazy after his wife left him.
比尔的老婆离他而去后，他便发疯了。
I'm crazy about chocolate ice cream.
我好喜欢巧克力冰淇淋。
crop
农作物；（牛羊等）吃（草）；把（头发等）剪得很短
Our crops are doing poorly because of the drought.
因为天旱，我们的农产欠收。
A flock of sheep are cropping grass on the prairie.
有一群羊在草原上吃草。
Julie had her hair closely cropped yesterday.
茱莉昨天去剪了超级短发。
damage
破坏，损坏
Taking drugs does damage to one's body and mind.= Taking drugs does harm to one's body and mind.
吸毒有害身心。
The car was totally damaged in a traffic accident.
那辆车在一起交通事故中全毁了。
damages
赔偿金（法律用语，恒用复数）
The singer sued the reporter for damages.
歌手控告该记者要求赔偿金。
helpful
有助益的，有用的；乐于助人的
You may find this book helpful.
你会发现这本书很有用。
Emily's a pleasant and helpful girl.
艾米莉是个人见人爱而且乐于助人的女孩。
helpless
无助的；无能为力的
A cat is helpless without its claws.
猫失去了爪子就会变得很无助。
I'm really sorry that I'm helpless to do anything.
找实在是无能为力，真的很抱歉。
pile
一堆；堆积（与up并用）；累积，堆积
There is a pile of books in Lucy's study.
露西的书房有一大堆书。
Peter had been on sick leave for two days, and his work at the office really piled up.
彼得请了两天病假，结果办公室的工作堆积如山。
Paul's desk is piled high with books.
保罗的桌子堆满了书。
greet
问候；迎接；对……做出回应
Mary greeted everyone at the party.
玛丽问候每个来参加派对的人。
The hostess warmly greeted me with a hug.
女主人给了我一个拥抱，亲切地迎接我。
Abraham's speech was greeted with great enthusiasm.
亚伯拉罕的演说得到了热烈的回应。
boil
（使）沸腾
We boiled some water to make tea for the guests.
我们烧了些开水来泡茶招待客人。
The water is boiling.
水沸腾了。