SimpleGWTApp 类随后定义一个文本框和按钮，可以使用它们输入某人的名字并发送一句问候语（参见 清单 10）。

The SimpleGWTApp class then defines a textbox and button, which you can use to input someone's name and send them a greeting (see Listing 10).

youdao

Nowadays they usually begin, "Hey, Professor" or "Yo, Professor," something like this.

如今他们通常以,嘿,教授,或者,呦,教授,这类问候作为邮件开头

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