Conservation equation
[计] 守恒方程
🧩 词语组成解析
🗣️ 情景例句
My slogan is I care.
我的口号是 我关心 。
To knit a scarf for her sweetheart
替她的情人织围巾
Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。