Biochemical oxygen demand (bod)
[化] 生化需氧量(BOD)
🧩 词语组成解析
biochemical
['baiɔ'kemikəl]
adj. 生物化学的;
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
I can't express myself very well in English.
我用英语表达不好。
What would you have done last night if you hadn't had to study?
如果昨晚你不必学习你会做什么？
First of all, they may have come to this planet of ours thousands or millions of years ago,
首先，他们可能在几千年前或几百年万年前已来过我们地球，