He can not read this book because he does not know English.
他读不了这本书,因为他不懂英语。
He is too small to go to school. So he can not read and write.
他太小还没有上学,因此也不会读和写。
Now, he can log in and read his mail, but he's not going to be using your servers to establish ssh connections and the like.
现在,他可以登录和阅读邮件,但不能使用您的服务器来建立 ssh 连接以及类似连接。
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