1. My mood gradually lightened.
    我的心情慢慢轻松起来.

2. Gradually a smile appeared on her face.
    她脸上渐渐地露出了笑容。

3. Gradually the river grows wider, the banks recede, the waters flow more quietly, and in the end, without any visible break, they become merged in the sea, and painlessly lose their individual being.
    然后河面渐渐地变宽，两岸后撤，河水流得平缓起来，最后连绵不断地汇入大海，毫无痛苦地失去了自我的存在。

4. In most cases the captive gradually quietens down and begins to accept its food.
    大多数情况下，新捕的象会逐渐安静下来，并开始接受喂饲的食物。

5. In the new country he became absorbed in making a new life for the two of us, so that he gradually ceased to grieve.
    在这个新的国家里，父亲专心致志地为我们俩开创一种新的生活，慢慢地不伤心了。