单词	Bertrand lens
释义	Bertrand lens noun : an auxiliary removable lens in the tube of a polarizing microscope used to obtain interference figures Word History Etymology probably after Joseph L. F. Bertrand
随便看	churnings churnmilk churns churns out churns through Churoya Churoyan churoyas churr churr-owl churrasco churred churrigueresque churring churro churros churrs churrus churus chus chuse chut chute chute man chute-the-chute

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