emergency landing zone造句

例句与造句

1. In preparation for manned flight, emergency landing zones at sea and on land have been set up and crews have performed practice rescues.
2. In a step toward future manned flight, it said, emergency landing zones were set up at sea and on land and crews have carried out practice rescues.
3. It's difficult to find emergency landing zone in a sentence. 用emergency landing zone造句挺难的