I spent days on this paper and even paid a graduate student to help me, and this stupid professor gives me a 'd'!
我在这篇文章上花了几天时间，甚至还花钱雇了位研究生来帮我，而这个笨蛋教授竟然让我得' D ' ！
2
I`d been feeling weak for days, in a way that was completely new to me.
这就是我去年十月有几天感到身体虚弱，在放学回家的路上呕吐了一道的路程，那滋味我从来没经历过。
3
The oil price has retreated from its peak in the past ten days largely because Saudi Arabia says it is pumping up to 600, 000 b/d to replace the shortfall in Libyan exports.