by，accident的近義句

近義句是by chance ，中文意思是偶然意外地

In this house nothing is there by chance: it is always the result of great deliberation.在這房子裡，沒有什麼東西是偶然的——總是非常仔細考慮後的結果。

I came here by chance and was just watching what was going on， when this girl came up to me.我碰巧來到這裡，正在看熱鬧，這時一個女孩向我走來。