Phylogenetics
系统发生学
🗣️ 情景例句
Why does it have to be one or the other?
为什么非得有这个就没有那个？
If it hadn't rained so hard yesterday, we would have played tennis.
如果昨天没下那么大的雨，我们就去打网球了。
'No,' the patient answered, 'I am Mr.John Gilbert.'
“不是，”病人回答说，“我就是约翰。吉尔伯特先生。”