Hcas
abbr. heterocyclic amines (potent carcinogens) 雜環胺; heterocyclic aromatic amines 雜環芬芳胺
??? 情景例句
Yes, caring.
是的 ，關心。
Speak little of your ill luck and boast not of your good luck.
少說失意事，莫夸好運道。
'I was in my office as usual,' answered the Ambassador.
“我和往常一樣，在辦公室里，”大使回答說。