Pre-coagulation
[化] 早期凝固
?? 詞語組成解析
abbr. 煉油工程師（Petroleum Refining Engineer）
coagulation
[k?u'?gju'lei??n]
n. 凝結(jié)，凝結(jié)物;
??? 情景例句
Yes.
是的。
Who is going to pay for it?
誰付賬？
What's Jim doing?
吉姆在干什么？