常見例句Were it not for quantum effects, a violin string could be cut in half, cut in half again and so on all the way down, finally becoming a massless pointlike particle. 若不考慮量子效應，一條小提琴弦可以對切、對切，再對切，如此一直下去，終究會變成一些無質(zhì)量的點狀粒子。pointlike electron 點電子pointlike center 點釘扎中心 返回 pointlike