It's set up to be well-insulated so it's adiabatic.
所以它是绝热的。
2
Hot baths are very important in Japan since traditional homes are not well-insulated as in the west and central heating is quite uncommon.
在日本热水澡是非常重要的，因为传统家庭保温系统没有西方国家好，而且集中采暖也很不普遍。
3
The house is finished to German Passivhaus standard, and includes a highly efficient, well-insulated building fabric that results in ultra-low energy consumption for heating and cooling the building.