Alkali puriflcation
[机] 碱法净化
🧩 词语组成解析
alkali
['ælkəlai]
n. 碱;
🗣️ 情景例句
Say good-bye to Richard.
替我向Richard说声再见。
I often go to the office in the morning.
我常常在早上去办公室。
It's seven.
七点了。