常見(jiàn)例句雙語(yǔ)例句Therefore, river evolution has very vital initiative and promoting effects on the formation and development of sand-dune groups and sandy land in natural conditions.這些足以說(shuō)明，在自然狀況下，河流縯變?cè)谏城鹑汉蜕车匦纬煽t化中起著非常重要的促進(jìn)作用。 返回 sandy land evolution