Police stopped him for driving erratically.

警察因其驾驶不循规则而把他拦下了。

He was obviously upset and was driving erratically.

他显然心烦意乱，开起车来摇晃不定。

His formal schooling continued erratically until he reached the age of eleven.

他的正式学校教育断断续续地持续到了他11岁时。

Olson began to behave erratically.

Olson的行为开始变得古怪。

To move or think erratically; vacillate.

反复无常变化无常地移动或思考；