doub

Observation window in middle of the door made of doub -layer toughened glass for observing heated things any time.

箱门中间装有双层钢化玻璃观察窗，可随时观察工作室内被加热物品的情况。

According to Mr. Doub, a healthy home is built on a foundation of three skills: to speak, to listen, and to cooperate.

据都伯先生说，一个健康的家庭应当建立在三个技能的基础之上：说、听、合作。

"Once you have made rules, it is important for parents to stick together to enforce them, " said Mr. Doub.

一旦你已经定下规矩，家长们共同商量是很重要的。