Pentaether
五醚, 四甘醇二丁醚
🗣️ 情景例句
Left, right. Enjoy it.
左 右。放 。
If wishes were horses,beggars might ride.
愿望若是马，乞丐也可乘；愿望难成事实。
This question is too complicated for me.
这个问题对我说来太复杂了。