Iod
abbr. 直接需氧量（Immediate Oxygen Demand）
🗣️ 情景例句
always makes one a little nervous.
总是让人有些紧张。
When the police arrived, I was resting.
当警察来的时候，我在休息。
These days, advertisers not only offer free samples, but free cars, free houses, and free trips round the world as well.
目前，做广告的人不仅提供免费样品，而且还提供免费汽车，免费住房，免费周游世界。