the act of bringing supplies or equipment by dropping them from aircraft

UN planes have made air drops to 300 flood-hit villages. 联合国飞机已向遭受洪灾的300个村庄空投了救援物资。

to bring supplies or equipment somewhere by dropping them from aircraft

The roads became blocked in the earthquake, but there is a plan to air-drop aid packages. 道路因地震阻断，但有计划将空投援助包。

Supplies are air-dropped to the remote mountain camp. 物资被空投到偏远的山区营地。