David Pred of Bridges Across Borders, a group that helps farmers, says big plantations are unsustainable because they leave many families with nothing.

VOA: standard.2010.06.02

And if you're returning nothing, you don't just leave it blank.

如果不返回任何值，你就让它成为空白的。

哈佛公开课 - 计算机科学课程节选

So it's these little differences that you'll very quickly acclimate to but it's these stupid little syntactic details that trips off, especially those less comfortable early on because if you leave out a single character, namely that semicolon on the right hand side, nothing will work.

你会很快适应这些,微小的区别,但我们正是要把这些罗里吧嗦的语法细节,尤其是那些让人非常头大的句子啃下来才行,因为如果我们一旦遗漏掉某个符号，譬如一个分号,从另一方面看来，很有可能什么都工作不了。

哈佛公开课 - 计算机科学课程节选