例句：This may provide a quick and accurate way of monitoring the amount of carbon dioxide in the air。这也许能提供一个监测空气中二氧化碳含量的既快又准的方法。The latest Japanese vacuum cleaners contain sensors that detect the amount of dust and type of floor. 日本的.最新真空吸尘器配有可探测灰尘多少和地板类型的传感器。