Column efficiency
[化] 柱效率
🧩 词语组成解析
column
['kɑləm]
n. 纵队，列;圆柱;专栏;
🗣️ 情景例句
Hi, Frank.
嗨， Frank。
Which train do I take to Philadelphia?
去费城乘哪趟车？
Betty and Susan are talking on the telephone.
贝蒂和苏珊正在通电话。