他们的成功有点玄乎: as far as i can see their success is a bit iffy
有点儿: 1.(不多) some; a little 短语和例子别担心, 你还有点儿时间呢。 don't worry, you still have a little time.2.(略微) somewhat; rather; a bit 短语和例子有点儿不好意思 be somewhat embarrassed; 有点儿疲倦 be a bit tired; 今天有点儿热。 it's