輸入需要查詢的關鍵字：
詞語：preemergent
preemergent的解釋
preemergent[,pri:i'mə:dʒənt]adj. 出土前的；出土前施用的
preemergent的意思
preemergent 萌前除莠劑;preemergent eruption 釋義：出齦前萌長;preemergent weed control 作物苗前雜草防治;