例句與造句

1. Information, Space & Defense Systems program management centers will be established for surveillance, reconnaissance and mission systems installation and checkout at the Developmental Center in Seattle; and Sea Launch and Communications, both in Seattle.
2. Information, Space & AMP; Defense Systems program management centers will be established for surveillance, reconnaissance and mission systems installation and checkout at the Developmental Center in Seattle; and Sea Launch and Communications, both in Seattle.
3. It's difficult to find installation and checkout in a sentence. 用installation and checkout造句挺難的