Nàgè fāxiàn chún shǔ ǒurán. That discovery was quite accidental.
Wǒmen ǒurán pèng dàole tā. We met her by accident.
Tā bèi hěnduō rén wéizhe, zìrán biàn dé yǒudiǎn jǐnzhāng. With so many people around he naturally became a bit nervous.
Měiguó de zìrán zīyuán hěn fēngfù. The United States is abundant in natural resources.
Jiālèfú de huǒtuǐ shèng liào yīdiǎn dōu bù guì, rán'ér què hěn hào chī. Carrefour's Ham offcuts are not expensive at all, but are nonetheless delicious.
Suīrán tā hěn yǒu qián, dàn tā bù xìngfú. Even though he has a lot of money, he's not happy.