名词
中文翻译：预订婚
同义词：
['pre-engagement', 'pre-contracting']
例句：
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1.They are engaged to be married.
他们订婚了。
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2.The couple has been pre-engaged for three years.
这对夫妇已经订婚三年了。
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3.He is considering pre-engaging a lawyer to represent him in the case.
他正在考虑请一位律师来代表他在此案中的利益。