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重点讲解：
1. hold up
举起；抬起；提起；
eg. She held up her hand stiffly.
她直挺挺地举着手。
eg. Hold it up so that we can see it.
把它举起来让我们看看。
2. I bet
我敢说；我确信；
eg. I bet you were good at games when you were at school.
我敢说你上学时体育很棒。
eg. I bet you can't do this puzzle.
我敢说，你解决不了这个难题。
3. give up
投降；认输；放弃；
eg. After a fruitless morning sitting at his desk he had given up.
他在书桌前徒劳地坐了一上午之后便放弃了。
eg. When faced with adversity she was never tempted to give up.
面对逆境她从未想过放弃。
n. 糖果
vt. 用糖煮，使结晶为砂糖
