然而，阿滕伯勒先生强调，从来没有给首次发射确定过正式日期。

However, Mr Attenborough stressed there never was an official date set for the inaugural launch.

youdao

然而，阿滕伯勒先生强调，从来没有给首次发射确定过正式日期。

However, Mr Attenborough stressed there never was an official date set for the inaugural launch.

youdao