A horizon
A层（腐殖堆积层, 等于淋溶层）
🧩 词语组成解析
horizon
[hə'raɪzn]
n. 地平线;范围;界限;眼界;
🗣️ 情景例句
Guess who I ran into today?
你猜我今天碰见谁啦？
Come back!
回来！
Mary has written ten letters today.
马力今天写了十封信。