His glasses fell down on the floor and broke up.
他的眼鏡掉在地上摔碎了。
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動詞詞組break up，意思是“終止，結束或打碎、拆散”，英文的解釋是，To scatter or disperse, to cease to exist as a unified whole（分散，破碎，不再是完整的）。
例句：
The crowd started to break up when the night fell.
天快黑時人群開始散開了。
Their marriage broke up. 他們的婚姻破裂了。
海納百川，有容乃大；壁立千仞，無欲則剛。