1.piece together 拼凑
They've pieced together his movements for the last few days before his death.
他们已理清了他去世前几天的活动情况 。
2.crime scene 犯罪现场
Photographs of the crime scene began to arrive within twenty minutes.
不到20分钟,犯罪现场的照片就开始传来了 。
3.message board 留言板
Have your say on our message board by clicking here.
在留言板上留言请点击这里 。
4.out front 外面
We told him to wait out front with the engine running.
我们告诉他在外边等着,不要熄火 。
5.a number of 许多
Two significant constants have been found in a number of research studies.
若干研究已经发现了两个重要常量 。