outer

The outer layer of the winter jacket is waterproof, while the inner lining keeps you warm.

(Chinese) 这件冬装夹克的外层是防水的，而内衬则能让你保暖。

Spacecraft must be able to withstand extreme heat when re-entering the Earth's outer atmosphere.

(Chinese) 航天器在重新进入地球外层大气时必须能够承受极端高温。