Doas
abbr. differential optical absorption spectroscopy 微分吸收光谱分析法
🗣️ 情景例句
Sit down, sit down.
请坐， 请坐。
Yes,I had breakfast two hours ago.
是,我2小时以前吃了早餐。
Great! Let's make it half past one.
好极啦！咱们就定在1：30 会面吧。