說明熱膨脹在日常生活中的應用~~(英文)

首先解左你個句野先︰
Draw a labeled diagram to show how this instrument can be used in a fire alarm?
畫一個有晒標示既圖，要表示到警鐘裏面用了什麼樂器(即音樂上的那些樂器)。
State one more daily application of thermal expansion.
Ans : When we stepped on a ping-pong ball carelessly, the ball will be deformed. We can use the hot water instantly and the ball will expand again and the ball will become the original shape.