We can assure you that our products are the most outstanding ones on the market today, and we offer a five-year guarantee.
我们可以向您保证我方产品是当今市场上最好的,并且可提供5年保修期。
So archaeologists have neither history nor legends to help them to find out where the first 'modern men' came from.
于是,考古学家们既缺乏历史记载,又无口头传说来帮助他们弄清最早的“现代人”是从哪里来的。