Preconcentration
n. 预选；预浓缩；预先富集
🗣️ 情景例句
It's a bonsai tree for your new apartment.
这是一颗盆栽，祝贺你迁新居。
I'm looking forward to seeing you again.
我盼望着再能见到你。
Would you like to leave a message?
你要留话吗？