Question

猜测词义并翻译句子

1)Be double careful when you cross the street．

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2)He doubled his slice of bread to make a sandwich．

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Answer 1

答案：
解析：

1)double　adv．双倍地；加倍地(过街时要加倍小心。) 　　2)double vt．把……对折(他将一片面包对折做成三明治。)