Desicchlora
燥钡盐, 无水粒状高氮酸钡(干燥剂)
🗣️ 情景例句
Maybe you can photogragh a class,
也许你来拍一次上课的情形，
This is a camera.
这是一台照相机。
Then, instead of having someone answering the phone all day, people can ring up the railway station and listen to a tape recording of the information.
然后，人们可以打电话到火车站，从录音电话中获取信息，而不要安排一个专人整天接电话。