In the "key" element, the default values for "not-null" and "update" are false and true, respectively. The above code shows them for the purpose of clarity.

在“key”元素中，“not - null”和“update”对应的默认值是false和true，上述代码为了明确这些取值，将它们写了出来。

youdao

The exterior finish is mainly made of bricks and stone materials, embedded with transparent glass, and the whole building features obvious interspersion of false and true and as well as masonry units.

外饰面以青砖和石材为主，镶嵌着通透的玻璃，使整个建筑的虚实和体块穿插更明显。

youdao

Others say that the opposite is true: that international contests encourage false national pride and lead to misunderstanding and hatred.

另一些人则持相反的观点：国际比赛会助长虚假的民族自豪感，导致误解和仇恨。

youdao

Then the pirates pulled down the false flag, and showed their true colors.

VOA: special.2009.05.24

false It's going to return true if it's a PAIL-indrome and false if it's a PAL-indrome. And it says true. Now maybe you're bugged by this.

如果不是会问的话则是,返回的是真值,那么你可能会觉得这个很烦。

麻省理工公开课 - 计算机科学及编程导论课程节选

That's what the serpent omitted in his speech. He said If you eat of that fruit of the tree of the knowledge of good and evil, It's true in one sense but it's false in another.

这就是蛇的话语中所忽略的，他说,如果你吃了分辨善恶智慧树的果实，从一方面来说它是对的，但从另一方面却是错的。

耶鲁公开课 - 旧约导论课程节选

So, OK. We tell and retell the true and false legends of Knute Rockne and winning one for the Gipper and all that, but we don't really mind.

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But a popular pastime is to spread news and rumours, both true and false, that challenge the official script of government officials and state-propaganda organs.

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You often hear attacks on international adoption as robbing a child of his or her culture, and that's both true and false.

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