Pdms
等离子体解吸质谱法
🗣️ 情景例句
Mr. Richard Stewart. Richard Stewart
先生。
If you dance you must pay the fiddler.
要想寻欢作乐，代价非付不可。
He asked me for a meal and a glass of beer.
问我要一顿饭和一杯啤酒。