基本解釋覆羽同根派生 coverts相關(guān)詞英漢例句Usually there is a distinct contrast between the black primaries and brown coverts, still evident at middle distances.長(zhǎng)尾水剃通常在黑色的初級(jí)飛羽與棕色的覆羽之間有著明顯的對(duì)比，在中距離的時(shí)候仍是可見的。Its tail is long and black with gray uppertail coverts and orange brown undertail coverts.尾羽脩長(zhǎng)黑色，尾上覆羽灰色，尾下覆羽橙褐色。coverts更多例句