肉眼

Bacteria are invisible to the naked eye.

细菌是肉眼看见。

Many stars overhead are invisible to the naked eye.

天上许多星星是肉眼看。

Extragalactic nebula is invisible to the naked eye.

我们用肉眼是看河外星系。

Macroscopic algae, commonly referred to as macroalgae or seaweeds, are large plant like structures commonly found in coastal waters worldwide.

肉眼可见海藻通常是大海藻和海草，是世界各地海岸水域常见大型植物。

Risk factors associated with HS bronchopneumonitis were oral–labial lesions, HS in the throat, and macroscopic bronchial lesions seen during bronchoscopy.

危险有口腔、唇部破损，咽喉部HS，支气管镜下肉眼可见支气管破损。