Diffusion donstant
[化] 扩散常数
🧩 词语组成解析
🗣️ 情景例句
No, not yet. What about you?
不， 还没有。你呢？
She's engaged married to John.
她和约翰订婚 结婚了。
Will you help me plant this tree, please?
你愿帮着种这棵树吗？