重点讲解：
1. single out
单独挑出；特别选出；
eg. His immediate superior has singled him out for a special mention.
他的顶头上司特别提到了他。
eg. It would be invidious to single out any one person to thank.
单独感谢任何一个人都易引起反感。
2. turn around
转动；转身；扭转；
eg. I felt a tapping on my shoulder and I turned around.
我感到有人拍了一下我的肩膀，于是转过身去。
eg. He turned around as he heard a noise behind him.
他听到身后有响声，便转过身来。
3. pounce on
（人）猛扑，突袭；
eg. He pounced on the photographer, beat him up and smashed his camera.
他突然扑向摄影师，痛打了他一顿，还摔碎了他的照相机。
eg. Fraud squad officers had bugged the phone and were ready to pounce.
反诈骗小组的警员们已在电话上安装了窃听器，并随时准备突击。
4. spread out
相隔很远的；分散的；
eg. The Kurds are spread out across five nations.
库尔德人散居在 5 个国家中。
eg. The search party spread out over the moor.
搜索队在荒草地分散行动。
