Migrating birds filled the pale sky.灰白的天空中满是迁徙的飞鸟。The mudflats offer a winter home to thousands of migrating swans.泥滩成为成千上万只迁徙的天鹅越冬的场所.Migrating birds have marvelouos directional sense.候鸟有非凡的方向辨别力。...
Migrating birds filled the pale sky...灰白的天空中满是迁徙的飞鸟。The mudflats offer a winter home to thousands of migrating swans.泥滩成为成千上万只迁徙的天鹅越冬的场所.AIM: To explore the amount of bone marrow mononuclear cells migrating to the allogr...