air delivery

• 空投

air delivery的用法和样例：

例句

1. They are requesting air drops of foodstuffs to the flooded areas.
   他们要求对洪灾地区空投食品。
2. Cargo chutes dropped with weapons and equipment are colored distinctively to facilitate their prompt and easy recognition while in the air.
   空投武器和装备的投物伞是彩色的，以便迅速发现和在空中就能识别。