问题描述:
一个英语句子的结构分析-----------------务必高手帮忙
33、The country has already sent up three unmanned spacecraft,the most recent having been launched at the end of last March.
这个句子是省略句,请补充完整,
33、The country has already sent up three unmanned spacecraft,the most recent having been launched at the end of last March.
这个句子是省略句,请补充完整,
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