Smokescopy
烟尘浓度测定器
🗣️ 情景例句
When he came to the States five years ago, he had only forty dollars in his pocket.
五年前他来美国时，口袋里只有40美元。
This nation is noted for its economic stability.
这个国家以经济稳定闻名。
Every night, the man upstairs came back late.
每天晚上，楼上人回来很晚。