aboard: 在船(或飞机,车)上。如:I never went aboard a ship. broad: 为形容词,宽广的。如:He has very broad shoulders. abroad: 副词,在国外或海外。如:He often goes abroad. board: 为动词,上(船,飞机,车)。如:The passengers are boarding the plane now.
sounding: 听起来,发声音 vi voicing: 说出,讲出来 vt