Polybasic acids
[机] 多元酸
🧩 词语组成解析
a. 多元的, 多碱价的\\n[化] 多碱的; 多碱价的; 多元的; 多代的
n. 酸, 酸类；有酸味的东西（acid的复数）
🗣️ 情景例句
My favorite hobby is coin collecting.
我最大的爱好是收集硬币。
Would you like something to drink?
您想喝点什么吗？
But the station master was adamant: rules could not be broken and she had to watch that train disappear towards her destination while she was left behind.
但站长态度坚决，规章制度不能破坏，姑娘只得眼看那趟火车消逝在她要去的方向而撇下了她。