为什么乌龟不能游泳？飞机不能降落？

Why can't a turtle swim? Why can't I land the plane?

youdao

今天，两架直升飞机也参与到搜救工作中，但是直升飞机因过于危险而不能降落在失事地点。

Two helicopters participated in the effort today, but they could not land at the wreckage site, saying it was too dangerous.

youdao

今天，两架直升飞机也参与到搜救工作中，但是直升飞机因过于危险而不能降落在失事地点。

Two helicopters participated in the effort today, but they could not land at the wreckage site, saying it was too dangerous.

youdao