重點講解：
1. on a roll
連連成功；連交好運；
eg. I made a name for myself and I was on a roll, I couldn't see anything going wrong.
我靠自己的能力成名了，接二連三地獲得成功，我覺得一切似乎一帆風順。
eg. Things are going great now! I'm on a roll!
事情進行得很順利！我好運正旺！
2. run over
（車輛）撞倒，碾過，軋過；
eg. He narrowly missed being run over by a car.
他差點兒被汽車壓死。
eg. This box looks as if it's been run over by a bus.
這個箱子好像被公共汽車撞翻過似的。
3. let out
發出（聲音）；
eg. When she saw him, she let out a cry of horror.
她看見他時嚇得大叫一聲。
eg. When the land was seen, the sailor let out a whoop of joy.
當看見陸地時，那水手發出一聲歡呼。