Local concentration
[化] 局部浓度
🧩 词语组成解析
local
['lokl]
adj. 地方的;当地的，本地的;局部的;褊狭的;
n. 慢车;本地居民（律师、教士、医生）;住处附近的当地酒店;本地新闻;
loc地方+al形容词后缀 → 地方的，局部的
🗣️ 情景例句
What's that, Mr. Carlson?
什么事， Carlson先生？
How much is it by registered mail?
挂号信要多少钱？
On his arrival he was sold to a farmer and worked in the fields.
一到美国，他就被卖给了一个农场主，到地里干活。