protractor
柯林斯詞典
1. N-COUNT A protractor is a flat, semicircular piece of plastic or metal that is used for measuring angles. 量角器; 分度規(guī)
返回 protractor
1. N-COUNT A protractor is a flat, semicircular piece of plastic or metal that is used for measuring angles. 量角器; 分度規(guī)