sharpened
adj. 尖锐的
例句
The sea air sharpened our appetites.
海上的空气增进了我们的食欲。
《牛津词典》
The outline of the trees sharpened as it grew lighter.
随着天色转亮，树的轮廓变得清晰了。
Her gaze sharpened, as if she had seen something unusual.
她眼睛一亮，好像看到了不寻常的东西。
《柯林斯英汉双解大词典》
