Quadrapole
四极子
🗣️ 情景例句
For heaven's sake stop whining.
我说你别再诉苦了。
Without practice, hopes will be reduced to zero.
没有实践，希望会化为乌有。
One day, Mrs. King asked Lucy to go shopping for her.
一天，金太太叫露西帮她去买东西。