an extra outer door for protection against severe weather or winter
双语例句
用作名词 (n.)
And as Peter knocked at the door of the gate, a damsel came to hearken, named Rhoda. 彼得敲外门，有一个使女，名叫罗大出来探听。
The outer door is a polyurethane foamy one with a glazing unit observation window, for better perspectivity and heat preservation. 外门为聚氨脂发泡门，中空玻璃观察窗，透视性好，保温性能好。
