1、Her kookiness became a defining characteristic, as she was always doing something eccentric.
她的怪癖成了她的一个特点，因为她总是做一些古怪的事情。
2、I love his kookiness - it adds excitement and unpredictability to our friendship.
我喜欢他的怪癖 - 这给我们的友谊增添了激情和不可预测性。