1·I took your bag instead of mine by mistake.
我不巧错拿了你的包。
—— 《牛津词典》
2·She took photos with her new smart phone and always shared her photos in her friend circle to express how happy she was. As a result, she often did something by mistake.
她用她的新智能手机拍照，并经常在她的朋友圈分享她的照片，以表达她的快乐。因此，她经常会做一些错误的事情。
3·He opened Ingrid's letter by mistake.
他误拆了英格丽德的信。
—— 《柯林斯英汉双解大词典》
4·He drilled through the wall by mistake.
他误将墙壁钻穿了。
—— 《牛津词典》
5·I did it by mistake.
我误做了这事。
—— 《牛津词典》
6·I was aiming at the tree but hit the car by mistake.
我对准树射击，不料误中了汽车。
—— 《牛津词典》
7·The men lost their way in a sandstorm and crossed the border by mistake.
这些男人在沙尘暴中迷了路，误越了边境。
—— 《柯林斯英汉双解大词典》
8·Declaring the wrong income by mistake will no longer lead to an automatic fine.
由于失误申报收入不符的不再予以自动罚款。
—— 《柯林斯英汉双解大词典》
9·I have taken yours by mistake.
我错拿了你的。
10·It must have got into the dough by mistake.
它一定是不小心掉进面团里了。