Permutoid reaction
[化] 交换反应; 交换体沉淀反应
🧩 词语组成解析
[化]交换体
🗣️ 情景例句
about five years ago.
大约五年前。
When he opened the door the cat ran out and brushed by his legs.
当他一开门，那只猫跳了出来，偎依在他的脚边。
The seeds must be carefully chosen; they must fall on good ground;
那就必然从精选良种做起，然后将其植入肥沃的土地，