Concentration difference
[建] 浓度差
🧩 词语组成解析
🗣️ 情景例句
It's a book of pictures.
这是一本摄影集。
We shall lie all alike in our graves.
一进坟墓，大家一样。
giant hovercraft liners could span the Atlantic;
大型的气垫班轮或许能跨越大西洋。