bleacher

1.It’s only in the bleachers where you have to sit in the sun.

只有在露看台上才得坐在阳。

2.The applications of the phthalocyanines in photodynamics therapy, light bleacher, catalysts, disc, nonliner optical proper-ity, electroluminace, gas sensor, electrochromic was reported in detail.

要介绍了酞菁化合物在动力学疗法、漂白剂、化剂、电记录、性学、致发、体传感器、致变色、机超晶格等方面的应用。