Bivallate
a. 围有两层防护土墙的
🗣️ 情景例句
Nowadays many TV programs need parental guidance.
现在许多电视节目需要在家长指导下观看。
I assure you of its quality.
我向你保证它的品质。
The question became one of whether Man could control the disease he had invented.
现在的问题是，人类能否控制住这种人为的疾病。