tā / zhǐ / shì / suí / shǒu / shì / le / yí / xià / méi / xiǎng / dào / wāi / dǎ / zhèng / zháo / jiě / jué / le / wèn / tí

他只是随手试了一下，没想到歪打正着解决了问题。

He only tried it casually, but luckily managed to solve the problem.