B horizon
B层；沉淀层
🧩 词语组成解析
horizon
[hə'raɪzn]
n. 地平线;范围;界限;眼界;
🗣️ 情景例句
He's not making much progress with his English.
他的英语进步不大。
To know everything is to know nothing.
事事皆知，事事不懂。
And I succeeded, Zheng Jie.
我还是成功了，郑杰。