C 芽，苞，花蕾a young tightly rolled-up flowers or leaf before it opens

　break out into ～s　发芽
　burst the ～s　使花蕾开放
　develop ～s　发芽
　rose ～　玫瑰花苞
　in ～　含苞待放

　Trees are breaking out into buds.　树都在发芽。
　Rose buds are near the burst.　玫瑰花苞要绽放了。

　vi.　发芽，长出蓓蕾 (leaf, flower, or branch) begin to grow; grow into a flower, leaf, or branch

　The rosebushes are budding.　玫瑰花正在含苞待放。
　She was a little girl when I left home; now she buds into womanhood.　我离开家时她还是个小女孩，现在已发育成年轻妇女了。

　［词源］中古英语budde（芽，芽苞）