1·Billy leaned forward and brushed a speck of dust off his shoes.
比利俯身刷掉鞋上的一点灰尘。
—— 《柯林斯英汉双解大词典》
2·But neither America nor Vietnam wanted the kids known as Amerasians and commonly dismissed by the Vietnamese as "children of the dust" -as insignificant as a speck to be brushed aside.
然而，美国也好，越南也罢，都不希望这些孩子被称为美亚混血儿。越南人一般把他们当做“尘埃之子”置之不理——像微不足道的灰尘一样抹掉。
3·I've GOT a speck in my eye.
我眼睛里掉进一点灰尘。
1·During the hour he'd already spent in the line, he'd memorized every scuff and speck of dirt on the back end of the truck in front of him.
停在车队里的时候为了消磨时间他记住了他前面的车尾上的每一处的小刮蹭和污点。