Doas
abbr. differential optical absorption spectroscopy 微分吸收光谱分析法
🗣️ 情景例句
Second, we have to make an effort to encourage American companies to do business in our country.
第二，我们必须鼓励美国公司在我国开展业务。
Fools never know when they are well off.
傻瓜永远不知道他们何时能享福。
While I write my pen moves, but the paper keeps still.
我写字时，笔是移动的，纸是静止的。