Undecalactone
十一(碳)烷酸内酯
🗣️ 情景例句
Go for the first prize! i know you are good enough.
争取拿头奖，我知道你行。
Are they all non-reserved seats?
他们全部不预订的吗？
Our policy is not to grant exclusivity.
我们的方针是不授与专卖权。