1.ahead of 在...之前
Abruptly the group ahead of us came to a standstill.
忽然我们前面的队伍停了下来 。
2.for the first time 第一次
Streams had run dry for the first time in memory.
溪流在记忆中第一次干涸了 。
3.throw away 扔掉
I should know by now not to throw away the directions until we've finished cooking.
我现在应该明白,饭没做完之前,不要把食谱扔掉 。
4.all the time 一直
Ray was very giggly and joking all the time.
瑞一直咯咯笑着开玩笑 。