海绵是软的，但木头是硬的。

The sponge is soft, but the wood is hard.

youdao

结论海绵窦区硬脑膜型动静脉瘘的诊断通常并不困难。

Conclusion Diagnosis of dural arteriovenous fistula of carotid cavernous sinus region is not difficult.

youdao

在显露硬膜下结构时，内镜下侧方可显露海绵窦外侧壁，前方可显露双侧嗅神经和直回。

To expose subdural structures, lateral wall of cavernous sinus in lateral, olfactory nerves and rectal gyri in front were revealed under endoscope.

youdao