Total oxygen demand
[机] 总氧量
🧩 词语组成解析
demand
[di'mɑ:nd]
vt. 要求，请求;需要;[法]召唤;询问，盘问;
n. 需求;需要;要求，请求;销路;
vi. 需要;请求;查问;
🗣️ 情景例句
It was so exciting to meet her again after so many years.
多年以后和她再相遇是多么让人激动啊!
Excuse me. Can you tell me where Main Street is?
劳驾，你能告诉我正街在哪里吗？
Half the world's telephone calls are made in English.
全球1/2的电话是用英语打的。