D-c block
[电] 直流闭塞
🧩 词语组成解析
block
[blɑk]
n. 块;街区;<英>大楼，大厦;障碍物，阻碍;
vt. 阻止;阻塞;限制;
🗣️ 情景例句
It was a pleasant surprise.
那是个惊喜。
The sewing machine is out of order.
这缝纫机坏了。
The Moon is likely to become the industrial hub of the Solar System,
月球很可能成为太阳系的工业中心。