Kilobase
n. 千碱基对（核酸链长度单位）
🗣️ 情景例句
What are you working on?
你在干什么？
In college I majored in science, What was your major?
大学时我主修自然科学，你主修什么呢？
for the simple reason that I was left with several curiously shaped bits of metal which did not seem to fit anywhere.
原因很简单，因为还剩下几个形状奇特的零件似乎哪里也装不上去。