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
Too long. Have a seat and I'll get you a cup of tea.
太久了。请坐，我来给你弄杯茶。
I have to raise some issues which may be embarrassing.
我必须提出一些比较尴尬的问题。
What are you doing on Saturday evening?
你星期六晚上要干什么？