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
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
Channel 5 is off the air now.
五频道已经停止播放。
Thanks, Mum.
谢谢，妈妈。