万一发生火灾，打碎玻璃并按下红色按钮。 - Zhictionary

Zhictionary

万一发生火灾，打碎玻璃并按下红色按钮。

In case of fire, break the glass and push the red button.

Source: Tatoeba

Sentence Composition

just in case
if by any chance
contingency

to happen; to occur; to take place; to break out

serious fire (in a city or a forest etc)

to shatter; to smash; to break into pieces

glass
(slang) male homosexual

classifiers: 張, 塊

and
furthermore
also
together with
(not) at all
simultaneously
to combine
to join
to merge

to combine
to amalgamate

short name for Taiyuan 太原 Tàiyuán

variant of 並 bìng

to press down
to press a button

red (color)
revolutionary

to push a button
button (one that can be pressed to trigger an action)