Dual-purpose column
[化] 两用柱; 两用萃取柱
🧩 词语组成解析
dual
['dju(:)əl]
adj. 双的，两部分的，二体的，二重的;
n. 双数;双数词;
column
['kɑləm]
n. 纵队，列;圆柱;专栏;
🗣️ 情景例句
But I have a doctor's appointment in the afternoon.
但我后天下午跟医生约好了。
May I ask you how old you are?
我能问你多大了吗？
During the day, sleep comes in snatches.
白天是忽睡忽醒，