英语语法分析

As ciliary muscle contracts, it pulls on these tissues.

睫状肌一收缩，就拉动这些组织。

There are two circumoral ciliary rows on the buccal region and a dorsal row of bristles.

其腹面口区具二环围口纤毛列；背面具一列背刚毛。

The ciliary body is an anterior dilation of the choroid at the level of the lens.

晶状体是脉络膜石晶状体平面上向前扩大的部分。