not only的用法和样例：
例句
- Water is not only colorless, but odorless as well.
水不仅没有颜色，也没有气味。 - They not only talked but also shouted and laughed.
他们不只谈话，而且喊叫大笑。 - "A science fiction cannot not be regarded as a mere entertainment, but in fact it tells the reader much more."
"科幻小说不能简单地看成是供消遣的，而实际上它给读者展示更深刻的内容。" - They are not only ornamental, but also useful.
它们不但具有装饰性，而且是实用的。 - Mary not only cleaned the room butwashed the window.
玛丽不但清扫房间而且也洗刷窗子。
