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量子光电倍增管
🗣️ 情景例句
Then, when shall we sign the contract?
那么，我们什么时候签合同？
He drinks a lot of milk every day.
他每天都喝很多牛奶。
And at seventeen he set off for the USA with a group of comedy actors.
17岁时随同一些喜剧演员去了美国。