基本解釋放牧蜂群英漢例句雙語(yǔ)例句Not until the 1920s when cars and trucks became affordable and roads improved, did migratory beekeeping begin to catch on.直到19世紀(jì)20年代儅汽車和卡車比較經(jīng)濟(jì)和道路改善， 遷移養(yǎng)蜂開(kāi)始流行。migratory beekeeping更多例句詞組短語(yǔ)短語(yǔ)beekeeping migratory 轉(zhuǎn)地放蜂migratory beekeeping更多詞組