meaning for 视线 shìxiàn:

  • - line of sight

qǐng
guānzhòng观众
tuōmào脱帽
yǐmiǎn以免
dǎngzhù挡住
biéren别人
de
shìxiàn视线

Spectators are requested to take off their hats so as not to block others' view.