Flatten

来自Big Physics
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wiktionary

ref

From flat +‎ -en.


etymonline

ref

flatten (v.)

late 14c., "to prostrate oneself," also "to fall flat," from flat (adj.) + -en (1). Transitive meaning "to make flat" is 1620s. Related: Flattened; flattening.

取自“https://www.bigphysics.org/index.php?title=Flatten&oldid=24172”