Preparative chromatography
[化] 制备色谱法
🧩 词语组成解析
a. 准备性的, 预备性的\\nn. 预备, 准备, 预备信号
n. 色谱法\\n[化] 色谱法; 层析法
🗣️ 情景例句
A year is really a short time, and later you will be glad you postponed getting married.
一年其实是很短的，过后你将会为你推迟了婚期而感到高兴的。
To have money is a fear, not to have it a grief.
有钱使人担心，没钱使人伤心。
OK, Mom! said Lucy.
“好的，妈妈！”露西说。