Hbsag
abbr. IgG antibody to HBsAg （對(duì)）乙型肝炎表面抗原的免疫球蛋白G抗體（科技符號(hào)）
??? 情景例句
Well, at one o'clock
嗯， 一點(diǎn)鐘
This is a chair.
這是一張椅子。
The same policeman was just walking slowly past the entrance, when Patrick asked the same question.
昨天的那位警察正從門口慢慢走過，帕特里克上前問了和昨天同樣的問題。