他得了一种罕见的癌症。He contracted a rare form of cancer.一种罕见的小矮马a rare breed of miniature horses四月份就这样炎热是极其罕见的。It's extremely rare for it to be this hot in April....
These latest murders have heightened fears of further attacks.最近发生的这些谋杀案让人们愈加担心会出现更多的袭击。Cross's interest heightened.克罗斯的兴趣浓厚起来。The lively dance heightened the joyous atmosphere of the scene.轻快的舞蹈给这场戏渲染了欢乐气氛....