单词	boundary
释义	bound·a·ry (boundə-rē, -drē) n. pl. bound·a·ries 1. Something that indicates a border or limit. 2. The border or limit so indicated.
随便看	do DO do. DOA doable do a disappearing act do a job on do a number on do away with DOB dobbin dobby Doberman Dobermann Doberman pinscher do bit do bit dobra Dobro dobson dobsonfly do business do by Dobzhansky doc

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