·2,447,543篇论文数据,部分数据来源于NoteExpress
这款扩音器还在机场等一些繁忙的公共交通系统区域进行了测试。
The megaphone is also being trial led in airports and areas with busy public transport systems.
youdao
应用推荐
模块上移
模块下移
不移动