VOA慢速英语:Leonardo da Vinci: One of the Greatest Thinkers in History

词汇讲解：

1. sketch n. 草图; 素描; 速写
例句：I will send you a slight sketch of the house.
我将给你寄去房屋的草图。

2. secretive adj. 遮遮掩掩的,守口如瓶的,秘密的
例句：He is secretive about his private life
他对自己的私生活守口如瓶。

3. smear vt. 弄脏, 弄污；把…擦模糊; 涂抹
例句：A few words were smeared.
有写字被涂模糊了。

4. resist vt. 不受(某事物的)损害[影响]; 抗; 耐
例句：Lack of proper nourishment reduces their power to resist disease.
营养不良降低了他们抵抗疾病的能力。

5. sculpt v. 雕刻;雕塑；做(头发); 梳(发式)
例句：The ladies had their hair sculpted by the leading coiffeur of the day.
女士们的发型都是当代有名的理发师做的。

6. unequal adj. 不同的, 不相等的；不均匀的；不平衡的
例句：Exchange of unequal values makes the poor countries poorer.
不等价交换使穷国更穷。

7. rust v. (使)生锈
例句：The rain will rust the iron roof.
雨水会使铁皮屋顶生锈。

8. stagnant adj. 不流动的, 停滞的
例句：There is a stagnant pool at the bottom of the garden.
在花坛底部有个死水塘。

9. sap vt. 逐渐削弱(某人〔某事物〕的力量、活力等)
例句：Lack of planning is sapping the company’s efficiency.
缺乏计划正在削弱公司的效率。

10. observation n.注意; 观察
例句：The new breed is under observation.
新品种正在观察中。

11. betray vt. 对…不忠, 背叛
例句：He promised never to betray the organization.
他发誓永不背叛组织。

12. lament v. (为…)哀悼, 痛哭, 悲伤
例句：The children lament the death of their mother.
孩子们哀悼母亲的去世。