System of licensing
[法] 许可证制度
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
v. 许可；批准（license的ing形式）
🗣️ 情景例句
you have a meeting with the production staff
要与生产部门人员开会，
I'm going to lend her two cans.
我要借给她两罐。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。