Shú / liào / tiān / qì / tū / rán / biàn / huài / yuán / dìng / de / háng / bān / zhǐ / hǎo / qǔ / xiāo.

孰料天气突然变坏，原定的航班只好取消。

Who would have thought that the weather would suddenly worsen and the scheduled flight would have to be canceled?