Tetrolic acid
[化] 2-丁炔酸
🧩 词语组成解析
🗣️ 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？
I asked him to go to the store, but he wouldn't
我请他去商店，但是他不肯。
It's all about space and satellites.
全是有关宇宙和卫星的。