arc n．弧，弓形，拱 例句：An arc is a part of the circumference of a circle or other curved lines. 弧是圆周或曲线的一部分。 apt adj. 易于的，有倾向的 例句：She is a clever girl but apt to get into mischief. 她...

aerial n．天线 例句：The picture is much clearer with the new aerial. 装上新天线后画面清晰多了。 nitrogen n．氮 例句：Air consists chiefly of nitrogen. 空气主要由氮气组成。 oxygen n．氧 例句：Trees rel...

trifle n．琐事，少量 例句：As to an additional servant, the expense would be a trifle. 至于增加一个仆人，这项花费是微不足道的。 trivial adj. 琐细的，价值不高的 例句：She could remember every trivial...

corps n．军团，兵队，团 例句：Her father served in the medical corps during World War Ⅱ. 第二次大战时，她父亲在医务部队服役。 recruit v. 补充，征募 例句：Business and government recruit first-degree gr...

hut n．小屋，棚屋 例句：The hut was made out of pieces of wood. 这小屋是用木板建造的。 cellar n. 地窖，地下室，酒窖 例句：This wine cellar stays at an consistent temperature all year round. 这个酒窖常年保...

vague adj. 含糊的，不清楚的 例句：Everything looked vague in the heavy fog. 在浓雾中，一切东西看上去都很模糊。 ambiguous adj. 暖昧的，不明确的 例句：She canceled an ambiguous phrase in the speech. 她删...

identical adj. 同一的，同样的 例句：He wore the identical dress on both occasions. 他在两个场合穿戴同一套衣服。 identification n．辨认，鉴定 例句：The identification of the accident victims took a long time....

petroleum n．石油 例句：Any new source of energy will be welcome, as there is a shortage of petroleum. 由于石油短缺，任何一种新能源都会受欢迎。 gaseous adj. 气体的，气态的 例句：Water is the same substanc...

grieve v．（使）悲痛，（使）伤心，忧伤 例句：It grieves me to see her in such bad health. 看见她的健康状况如此不佳，我很伤心。 grief n．悲痛，伤心事 例句：A flash of grief came upon him when he...

chaos n. 混乱 例句：After the failure of the electricity supplies the small town was in chaos. 电力供应中断，小镇陷于混乱之中。 riot n. 暴乱，骚动 例句：A big riot happened in the city. 大暴乱发生在那个城...