Tā shì wéishù bù duō néng shuō liúlì Zhōngwén de wàiguórén zhī yī.
He is one of the few foreigners who can speak fluent Chinese.
Tips
usage
为数不多 is commonly used in written Chinese to describe something rare or scarce. It usually precedes a noun or appears after the subject. Similar to 寥寥无几 but slightly less extreme.
