英语语法分析

All groups? Bacterial cultures of conjunctival sac were negative.

用药组结膜囊细菌培养均为阴性。

In the first method, one drop of this dilution is dropped into the conjunctival sac.

第一种方法是将一滴这种稀释液滴入结膜囊。

Results: All the conjunctival wounds were healing well and there were no complications.

结果：所有兔结膜手术切口均愈合良好，未出现明显的并发症。