Ppt.
[医] 沉淀[物], 制备的, 精制的
🗣️ 情景例句
Lovely weather for ducks.
这种天气至少鸭子喜欢。
Justice has long arms.
天网恢恢，疏而不漏。
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，