Concentration gradiant
[电] 浓度梯度
🧩 词语组成解析
🗣️ 情景例句
Language is her strength, math is her weakness.
语言是她的强项，数学则是她的弱门。
Is there any chance of my borrowing your typewriter?
能不能借用一下你的打字机？
She was soon out of breath, but she continued to run.
只追了一会儿便上气不接下气了，但她还是继续追赶。