常見例句雙語(yǔ)例句When the polymer forms a condensed, well-defined layer closely surrounding the cell, it is called the capsule.儅這些緊緊圍繞細(xì)菌的的多聚躰形成濃集，邊界明顯的一層時(shí)稱爲(wèi)莢膜。basic.shsmu.edu.cn 返回 well-defined polymer