路变直了，我们驶上了高原。The road straightened and we were on a plateau.这弯曲的金属片自己可以变直.The bent strip can straighten up by itself.周围气温下降时,金属带变直.As the air around it cools , the metal straightens....

“变直”的英语可以翻译为：[医]straighten ...