飞机采用前掠翼气动布局并非鲜为人知，但无人驾驶飞机采用前掠翼却前所未有。

The aircraft is adopted with the swept forward wing is not a new configuration, but the unmanned aircraft is adopted with the swept forward wing is unprecedented.

youdao

飞机采用前掠翼气动布局并非鲜为人知，但无人驾驶飞机采用前掠翼却前所未有。

The aircraft is adopted with the swept forward wing is not a new configuration, but the unmanned aircraft is adopted with the swept forward wing is unprecedented.

youdao