🗣️ 情景例句
I owe you a good steak dinner.
我欠你一顿牛排晚餐。
Mutual understanding.
心照不宣。
Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有时，保密竟达到了这样的程度，即连研究工作的整个性质都不准提及。