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回答长度
🗣️ 情景例句
It's been great talking to you.
和你谈得真高兴。
It's cold this afternoon.
今天下午很冷。
for fear the agents of other firms should be able to trace the kind of research they are likely to be undertaking.
他们生怕别的公司的情报人员据此摸到他们可能要从事的某项科研项目。