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突如其来 ---------- come all of a sudden
例句：
A: A quarrel came all of a sudden in our office in the morning.
上午我们办公室里，一场争吵突如其来。
B: Oh, that's terrible!
啊，那太糟糕了！
同义词：
arise suddenly
appear suddenly
happen suddenly
突飞猛进 -------- advance rapidly
例句
A: How are you getting along with Mary?
你和玛丽进展如何？
B: Though we got to know a month ago, our friendship has been advancing rapidly.
虽然我们认识才一个月，但我们的友谊突飞猛进。
同义词：
advance by leaps and bounds
make giant strides
注释：
get to know 认识
例句：
A: A quarrel came all of a sudden in our office in the morning.
上午我们办公室里，一场争吵突如其来。
B: Oh, that's terrible!
啊，那太糟糕了！
同义词：
arise suddenly
appear suddenly
happen suddenly
突飞猛进 -------- advance rapidly
例句
A: How are you getting along with Mary?
你和玛丽进展如何？
B: Though we got to know a month ago, our friendship has been advancing rapidly.
虽然我们认识才一个月，但我们的友谊突飞猛进。
同义词：
advance by leaps and bounds
make giant strides
注释：
get to know 认识
