oxygen什么意思?
Serious lack of oxygen in the cabbages什么意思
请问氧清洁压力表oxygen clean pressure gauge什么概念?
oxygen是什么
Water is to fish ---------oxygen is to human beings.横县应该填什么,
Fish take in oxygen through their gills.有什么词组可代替take in?
翻译oxygen masks
gas oxygen 怎么翻译
oxygen is to us what fish is to water.这个句子怎么翻译 是个什么句子 句子成分是什
Trees produce oxygen,为什么不是Trees provide oxygen
Hydrogen and oxygen,( ) ,are gases
Once_____ oxygen ,the brain dies .
根据句子意思和所给的首字母写出所缺单词。 1. Oxygen (氧气) is a kind of u_______ ga