Hartmann diaphragm
[机] 哈特曼光
🧩 词语组成解析
哈特曼(姓氏)
diaphragm
['daiəfræm]
n. <机> 隔板;<解>横隔膜;<物>光圈;快门;
adj. 光圈的，隔膜的;
🗣️ 情景例句
I have to sign copies of my book for a lot of people
我还必须为许多人在我的书上签名
Internet is number one!
国际互联网真是顶呱呱！
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。