wèi / le / zhǎo / dào / jiě / jué / bàn / fǎ / tā / jiǎo / jìn / nǎo / zhī / de / sī / kǎo / le / hǎo / jǐ / gè / xiǎo / shí

为了找到解决办法，他绞尽脑汁地思考了好几个小时。

He racked his brains for several hours to find a solution.