qiǎng / zì / yóu / jī / huì / xùn / sù / yǎng / huà / kōng / qì / zhōng / de / xǔ / duō / wū / rǎn / wù

羟自由基会迅速氧化空气中的许多污染物。

Hydroxyl radicals rapidly oxidize many pollutants in the air.