Valylene
缬烯炔, 2-甲基-1-丁烯-3-炔, 异戊稀炔
🗣️ 情景例句
Something simple--but a good one.
要简单的，但要精美 。
They won't listen, so don't waste your breath telling them.
他们听不进去，不必和他们多费口舌了。
I wonder if they can make it.
我在想他们是不是能办得到。