典型例句：The tremendous downpour was reported to have dumped 46 inches of rain in the course of twenty-four hours.
译文：据报道，这场大暴雨在24小时内的降雨量已经达到了46英寸。
想一想：dumping
Key:n.倾销
durable a.耐久的，耐用的
典型例句：We have developed a durable friendship.
译文：我们已经建立了长久的友谊。
巧记：dur(持续)+able(可……的)=可持续的
想一想：①durability ②duration ③durably
Key:①n.经久，耐久力 ②n.持续，持久 ③ad.经久地，坚牢地
duration n.持续时间，为期
典型例句：He will be in hospital for the duration of the school year.
译文：他整个学年都将住院。
dusk n.薄暮，黄昏，幽暗
典型例句：The street lights go on at dusk.
译文：街灯在傍晚时分亮了起来。
dye n.染料;染色 v.染
典型例句：She dyed her hair black.
译文：她把头发染黑了。
dynamic n.动力 a.有活力的，动力的
历年真题：He was such a dynamic speaker that held our attention every minute of the three-hour lecture.
译文：他是一位如此有活力的演讲者，在三个小时的演说中每时每刻都抓住了我们的注意力。
