Tridane
十三烷基苯
🗣️ 情景例句
There are abundant free materials available on the internet.
因特网上有丰富的免费资料提供。
I was about to leave.
我正要出门。
It was necessary first to arrive at that degree of sophistication where we no longer set our own belief against ourneighbour's superstition.
不用自己的信仰去反对我们邻居的迷信。