"stubborn, obstinate, perverse," 1610s (earlier refractorious, 1550s, refractary, c. 1600), from Latin refractarius "obstinate, stubborn," from past participle stem of refringere (see refraction). Related: Refractorily; refractoriness.
实用例句
1. He is a very refractory child .
他是一个很倔强的孩子。来自辞典例句
2. Silicate minerals are characteristically refractory and difficult to break down.
硅酸盐矿物的特点是耐熔和难以分离.来自辞典例句
3. The excreta of aquatic animals - fish, frogs, turtles, snakes, etc - contain similar refractory materials.
水生动植物如鱼 、 蛙 、 龟 、 蛇等的排泄物中也会含有类似的难处理的物质.来自辞典例句
4. The excreta of humans and land animals contain soluble refractory organic matter.
人和陆生动物排泄物含有可溶的难处理有机物质.来自辞典例句
5. Reflux leads to recurrent or refractory aspiration pneumonia.
