Phytosphingosine
植物鞘氨醇, 4-羟双氢(神经)鞘氨醇
🗣️ 情景例句
This is the last chance you can get up to 60 percent discount.
这是您可以得到6折的最后机会。
How could that be?
怎么可能有这种事？
One man was told to fix up an air-line to provide compressed air for the machines they were using.
有个工人被派去安装"供气管"，给他们正在使用的机器提供压缩空气。