例句與造句

1. Based on the reseaching of lycoris leaf micro - morphology characters by sem scanning , light microscope viewing and using paraffin method in the article , we try to provide the proofs of experiment and the efffective characer indexes to discuss the system and evolution of the lycoris . we find these microscope characers through reseach are as follows : the arrangement type , density and the length of stoma ; the shape and length of the epidermal cells ; the ridge of epidermis ; the transverse shape of leaf ; the number of the vascular bundle ; the style of vessel arrangement of vascular bundle in the middle vein ; the layers of palisade tissue ; the ratio of the thicken of palisade tissue to that of spongy tissue ; the angle number of the middle leaf ; the type of ventilating cavity etc . these characters are different from those of species in lycoris , meanwhile these characters are similar to those of some species in lycoris . so these characters can be used as the character indexes for differentiating species and reseaching systematic evolution of lycoris ; we can divide lycoris into two subgenus by these characteristic indexes : the species of one subgenus are l . aurea ( l " her . ) herb , , chinensis traub , l . caldweuii traub , l . anhuiensis y . hsu et q . j . fan , l . longituba y . hsu et q . j . fan ; the species of another subgenu s are l . houdyshelii traub , l . albiflora koidz . ,
   研究結(jié)果表明：葉表皮的氣孔排列方式、長度、長寬比，脊的明顯與否，葉表皮上的顆粒紋飾的多少、大小，葉表皮細(xì)胞長度、長寬比、垂周壁形狀，上部葉柵欄組織細(xì)胞層數(shù)、葉的維管束數(shù)、葉中脈導(dǎo)管組成數(shù)目，氣腔類型，葉的脊部遠(yuǎn)軸面的角數(shù)，葉緣的形狀等這些特征在種間存在差異，同時(shí)，在有些種之間又有相似性；因此，這些特征既可以作為區(qū)分種的證據(jù)，又是研究石蒜屬植物系統(tǒng)演化的性狀指標(biāo)，根據(jù)這些性狀指標(biāo)，可以將石蒜屬植物大致分為兩個(gè)亞屬：一是忽地笑、中國石蒜、短蕊石蒜、安徽石蒜、長筒石蒜，二是江蘇石蒜、乳白石蒜、石蒜、玫瑰石蒜、稻草石蒜；在兩個(gè)亞屬中其中有些種如忽地笑、長筒石蒜、中國石蒜的親緣關(guān)系則更近些。
2. It's difficult to find differentiating species in a sentence. 用differentiating species造句挺難的