Centerx
集中式交换; 市话分局交换
🗣️ 情景例句
They are a right match.
他们是天生的一对。
Chains of gold are stronger than chains of iron.
金链锁人比铁炼更牢靠。
for she had sixteen watertight compartments.
因为船由16个密封舱组成，