北方的许多房子在冬天很暖和，因为它们都作了隔热处理，使热量不致散失。

Many houses in the north are warm in winter because they are insulated so that the heat is not lost.

youdao

北方的许多房子在冬天很暖和，因为它们都作了隔热处理，使热量不致散失。

Many houses in the north are warm in winter because they are insulated so that the heat is not lost.

youdao