Pid
[化] 光离子化检测器\\n[医] 苯茚二酮
🗣️ 情景例句
Please sit down, Alexandra.
请坐 ，Alexandra。
If there were no clouds, we should not enjoy the sun.
吃得苦中苦，方知甜中甜。
So it is a comparatively simple step from locating the sea bottom to locating a shoal of fish.
从测定海深到测定鱼群，这一进展比较容易。