A-b toll trunk
[电] 甲乙长途中继线, AB长途中断线制
🧩 词语组成解析
toll
[tol]
n. 通行费;伤亡人数;钟声;长途电话费;
v. 鸣钟;敲钟;
🗣️ 情景例句
He worked his way through college.
他半工半读念完大学。
He has majored in biology.
他专供生物学。
No. Why?
不知道。怎么回事？