★puma

n. 美洲狮

★spot

v. 看出，发现

pick out,see,recognise,catch,sight of

spot=see : 强调结果、辨别出、看见、识别、发现

find : 强调发现的结果

find out：查出事实真相

discover：做出重大发现

notice：注意到

observe：观察

watch：观察活动中的人或画面

A tall man is easy jto spot in the crowd.

He has good eye for spotting mistakes.

n. 斑点

There is a white spot on the shirt.

on the spot

1.立刻，马上(at once ,immediately)

Anyone breaking the rules will be asked to leave on the spot.

2.at the place of the action 在现场

Wherever she is needed,she is quickly on the spot.