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重点讲解：
1. and all 等等；甚至包括；
He dropped his sausage on the pavement and someone's dog ate it, mustard and all.
他把香肠丢在人行道上，不知是谁家的狗将香肠甚至连带芥末都吃个了精光。
2. be able to do sth. 可以…的，能够…的；
It must be better to be able to offer them love and security.
要是能给予他们关爱和安全感肯定会更好。
3. at risk 处境危险；有风险的；在危险中；
The report underlined his concern that standards were at risk.
报告强调了他对道德水准可能会受影响所表示的关注。
4. sniff out 发现；找到；
Journalists are good at sniffing out a scandal.
记者善于发现丑闻。
n. 果心，核心，要点
vt. 挖去果核
