Underconcentration
浓缩不够, 浓缩(倍数)不足
🗣️ 情景例句
We were exposed to the latest theories on child care.
我们接触过有关幻儿保育的最新理论。
How often did I tell you not to slam the door?
我告诉你多少次不要砰然关门?
It can take as long as eight days to rig up rope ladders and to establish supply bases before a descent can be made into a very deep cave.
有时需要花费整整8天时间来搭起绳梯，建立供应基地，然后才能到一个很深的洞穴里。