Qdr
数码定量放射照相
🗣️ 情景例句
Please keep off the grass.
请勿践踏草地。
I worked at the shipping company this morning.
我今早在船公司工作。
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？