它们达到复杂的形态, 出现分枝, 管状突起.用英语怎么说？

它们达到复杂的形态, 出现分枝, 管状突起.

They attain complex morphology, appearing as branched, tubular processes.

they

pron. 他/她/它们，人们，大家，政府，当局，她们；

例句
The storms had abated by the time they rounded Cape Horn.
他们绕过合恩角时，暴风雨已经减弱。

attain

vt.& vi. 达到，获得，遂愿，经过努力到达某事物；vt. 达到，实现，获得，到达；vi. 达到，获得，到达；

例句
A French aeronaut, M. Meunier , tried to attain his end by compressing air in an interior receptacle.
法国航空家摩尼叶曾经想把空气压送到气球里来达到这个目的.

complex

adj. 复杂的，难懂的，复合的；n. 建筑群，相关联的一组事物，情结，不正常的忧虑；

例句
...bitmap graphics for representing complex images such as photographs.
表示照片这类复杂图像的位图图形

morphology

n. 形态学（尤指动植物形态学或词语形态学）；

例句
The characteristics of distribution and morphology of argyrophil cells were also discussed.
本文还对多疣壁虎肠道嗜银细胞的分布及形态特点做了讨论.

appearing

v. 出现( appear的现在分词 )，出庭（作证或受审），演出，发表；

例句
For the President, the calculations are equally difficult. If the peacekeeping operation goes wrong he risks appearing weak.
对总统说来,局势同样难料。假如维和行动出了岔子,他就会显得无能。

as

adv. 同样地，一样地，例如；prep. 作为，以…的身份，如

例句
As far as I can recall, Patti was a Smith.
我记得帕蒂是姓史密斯的。

branched

有枝的，分岔的；

例句
Red, Anemone _ flowered ; stout stems , long stalks , lage thick leaves in dark green , spreading, freely branched , medium blooming.
红色, 托桂型.颈粗.柄长.叶肥大深绿色.株型开张, 分枝力强.花期中.

tubular

--

例句
For example, skirts are designed in many styles, such as A - line , tubular , dirndl, flared and pleated.
例如裙子可以设计成各种款式, 如A字裙、筒裙 、 紧身连衫裙、喇叭裙 、 褶裙等等.

processes

n. 过程( process的名词复数 )，工序，做事方法，工艺流程；v. 加工( process的第三人称单数 )，处理，审阅，审核；

例句
As children grow older, their cognitive processes become sharper.
孩子们越长越大，他们的认知过程变得更为敏锐。