More probable is bird transport,either externally,by accidental attachment of the seeds to feathers,or internally,by the swallowing of fruit and subsequent　excretion of the seeds.
    更有可能的是鳥(niǎo)類(lèi)運(yùn)輸：或者是通過(guò)外部途徑，即由于種籽偶然粘附在羽毛上;或者是通過(guò)內(nèi)部方式，即由于鳥(niǎo)類(lèi)吞食果子并隨后將種籽排泄出來(lái)。
    難句類(lèi)型 ：復(fù)雜修飾、插入語(yǔ)、倒裝
    解釋?zhuān)壕涫子幸粋€(gè)倒裝，正常語(yǔ)序是bird transport is more probable.后面的句子中由于插入部分的頻繁出現(xiàn)使句子顯得十分凌亂。
    意群訓(xùn)練：More probable is bird transport,either externally,by accidental attachment of the seeds to feathers,or internally,by the swallowing of fruit and subsequent　excretion of the seeds.