Heterokontae
不等鞭毛藻纲
🗣️ 情景例句
Keep cool.
保持冷静。
He went to the post office to mail a letter.
他去了邮局寄信。
There are times when we would willingly give everything we possess to save our lives,
有时，我们为了挽救生命，愿意付出我们所占有的一切。