Oab
abbr. obligate anaerobic bacteria 专性厌氧菌; one-to-all broadcast 一点对所有点广播; O-acetyl benzaldehyde O-乙酰苯甲醛; O-aminobenzoate O-氨基苯甲酸酯
🗣️ 情景例句
Really, Mr. Marchetta?
真的吗，Marchetta先生？
She feared the arrival of the bill-collector.
她害怕收帐人来。
But of course, he can learn by himself. He has a book and a dictionary.
但当然，他也可以自学。他有书和词典。