excurrent

1.These are usually lateral on the nostrils and anterolateral to the excurrent apertures, but may be anterior to the excurrent apertures only.

这些通常在鼻孔侧面与流出孔前外侧，但是可能只有于流出孔前。

2.2. Take a look at the excurrent canal of certain sponges.

请看看若干海绵之流出管。