Sensitimeter
感光器
??? 情景例句
He goes to high school.
他在上高中。
Last year, he applied to Harvard University for a scholarship and succeeded in passing a difficult examination.
去年，他向哈佛大學申請獎學金并通過了一個很難的考試。
he identifies himself with its centre of gravity, its mass, its weight;
他把自身和物體重心、質量、重量融為一體。