Originally, matches were narrow strips of wood whose tips were dipped in kerosene.最初，火柴都是一端浸了煤油的细木条。

diplomatic adj.外交的；老练的

Diplomatic negotiations generally take place in embassies or in the foreign offices of the countries where ambassadors are accredited.外交谈判通常在大使馆或者在大使被认可的国家的办公室中举行。

discard vt.丢弃

When he purchased a new coat，he discarded his old one.他买了新衣服，就丢掉了旧衣服。

discharge vt.释放；排出

Large amount of dangerous waste is discharged daily by the factory.这家工厂每天都在排放大量的有害废弃物。

It has been claimed that the discharge from the nuclear plant is entirely safe.据称，核电站的排放物是完全安全的。

discipline n. ①纪律；训练②学科

Children who have had no discipline are often hard to teach.不遵守纪律的孩子通常很难教。

The student chose the discipline of mathematics.那个学生选择广数学这门学科。

discount n.折扣vt.不全信，对…持怀疑态度

Since the product was defective, the manager agreed to a discount.由于这件商品存在缺陷，因此经理同意打折。

The police discounted what the informer said.警方对线人的话持怀疑态度。

disgust n.厌恶，嫌恶

The horror film filled Mike with disgust.那部恐怖电影让迈克感到恶心。

dismiss vt.解散；摒除

Believing in John's love for her, she dismissed the notion that he might be imfaithflil.她相信约翰对她的爱，于是打消了他可能不忠诚的想法

disorder n.杂乱，紊乱

The whole office was in a state of disorder—she couldn’t find a thing.整间办公室一片混乱——她一件东西也找不到。

display vt.陈列；显示n.陈列；显示

The permit should be clearly displayed in the front window.应把许可证醒目地摆放在前窗位置。

The museum's display of ancient jewelry attracted many visitors.博物馆举办的古代珠宝展览吸引了许多参观者。