yóu / yú / jiāo / tōng / yōng / jǐ / wǒ / men / bǐ / yù / jì / wǎn / dào / le / èr / shí / fēn / zhōng。

由于交通拥挤，我们比预计晚到了二十分钟。

Because of traffic congestion, we arrived twenty minutes later than expected.