He knew it was dangerous to be seen there was a price on his head.
他知道被人发现是很危险的--正在悬赏要他的脑袋呢。
I don't know enough about porcelain to be able to price these plates.
我不太懂得瓷器,估计不出这些盘子的价钱。
I wouldn't have my sister's children to stay again not at any price!
我可不愿意再让我姐姐的孩子留下来住了--说什麽也不行。