Tetrahymenina
四膜虫亚目
🗣️ 情景例句
I want to get my work finished by tomorrow.
我想在明天前完成工作。
I've realized that we should stop the pollution.
我明白必须阻止公害的原因了。
There's a zoo in the park. We can go and have a look at the animals.
公园里有个动物园哩。我们可以去看看动物。