Diffractometers
(diffractometer 的复数) n. [光] 衍射计
🗣️ 情景例句
For example, did you know that 1 in 4 teenagers has tried marijuana?
比如，你是否知道4个青少年中就有1位曾经吸过大麻？
Many receive advice only the wise profit by it.
聆忠言者众，智者独获益。
Here you are!
给你！