Ulvan
石莼(胶)聚糖
🗣️ 情景例句
You look terrible!
你的穿着看起来真糟糕！
I don't think your plan will work.
我想你的计划行不通。
Thus one simple fact, a change in the number of bison, had an effect on the whole wildlife chain of the plains.
因此，出现了这样一个简单的事实--野牛数目换的变化对平原的整个野生生物链都产生了影响。