Switchboard model
[化] 接线板模型
🧩 词语组成解析
switchboard
['switʃbɔ:d;'switʃˌbəurd]
n. 配电盘;电话交换机;
🗣️ 情景例句
who's responsible for this meeting,
他是这个会议的负责人
I tried several times to call, but there is no answer.
我打了几次，但是没有人回答。
Clusters of tin insects called aphids were to be found on the underside of the leaves.
结果在树叶背面找到成串的叫作蚜虫小虫子。