If you condense something, especially a piece of writing or speech, you make it shorter, usually by including only the most important parts.
We have learnt how to condense serious messages into short, self-contained sentences...
我们已经学会了如何把重要的信息压缩成简短独立的句子。
When a gas or vapour condenses, or is condensed, it changes into a liquid.
Water vapour condenses to form clouds...
水蒸气凝结形成云。
dens= to become thick 变浓厚
condense v. 浓缩
con 加强 + dense 浓密的 → 浓缩
dense adj. 浓密的
dens 变浓厚 + e → 浓密的 densimeter n. 密度计
densi〔= dens〕变浓厚 + meter 测量计 → 测量密度的仪器 → 密度计
density n. 密度
dens 变浓厚 + ity 具备某种性质，状况 → 密度
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