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　　風(fēng)??(feng)媒??(mei)花??(hua)粉??(fen)指??(zhi)借??(jie)助??(zhu)風(fēng)??(feng)力??(li)傳??(chuan)播??(bo)授??(shou)粉??(fen)的?(de)花??(hua)粉??(fen)??，一??(yi)般?(ban)花??(hua)粉??(fen)粒??(li)小?(xiao)、質(zhì)??(zhi)輕??(qing)、量??(liang)多??(duo)??，如??(ru)柏??(bai)樹??(shu)、楊??(yang)樹??(shu)、柳?(liu)樹??(shu)、樺??(hua)樹??(shu)、梧??(wu)桐??(tong)等??(deng)；它??(ta)的??(de)特??(te)點(diǎn)??(dian)是?(shi)花??(hua)型?(xing)較??(jiao)小??(xiao)、色??(se)淺?(qian)、無(wú)??(wu)香?(xiang)味??(wei)??，數(shù)??(shu)量??(liang)多??(duo)??，花??(hua)粉??(fen)傳??(chuan)播??(bo)面??(mian)積??(ji)很??(hen)廣??(guang)、在??(zai)空??(kong)氣??(qi)中??(zhong)停??(ting)留?(liu)時(shí)??(shi)間??(jian)長(zhǎng)??(chang)??。??　　★ 外??(wai)出??(chu)時(shí)??(shi)需??(xu)穿??(chuan)長(zhǎng)??(chang)袖??(xiu)衣??(yi)服??(fu)??，佩??(pei)戴?(dai)口??(kou)罩??(zhao)和??(he)眼??(yan)鏡?(jing)；。