There was something undefined and complete, coming into existence before Heaven and Earth.

有物混成，先天地生。

And babies, an still undefined power.

而婴儿则是一种尚未明确的力量。

Life is engaging enough by itself and the future is this undefined weird thing.

生活本身就足够吸引人，未来就是这么不确定的奇怪东西。

The Japanese film Kimi No Na Wa, or; Your Name, starts with a rather undefined longing.

日本电影《你的名字》（Kimi No Na Wa）以一种相当模糊的渴望之情开头。

Watts had announced he would not travel with the Stones in 2021 because of an undefined health issue.

沃茨曾经公开宣布，由于未确定的健康问题，他不会参加2021年滚石乐队的巡演。

Programming languages have some undefined behaviors, such as what to do with misaligned pointers or when encountering signed integer overflows.

编程语言有一些未定义行为，例如如何处理偏离的指针以及遇到带符号整数溢出时该怎么办。

An indefinite pronoun is just that, it's indefinite, undefined, uncertain.

不定代词就是这样，它是不定的，未定义的，不确定的。

A second, still undefined mechanism seems to bring genes from different chromosomes together.

第二种仍未定义的机制似乎将来自不同染色体的基因聚集在一起。

I don't yet know what an undefined reference is, necessarily.

我还不知道什么是未定义的引用。

My head throbbed with excitement, and I felt an undefined uneasiness.

我的头因兴奋而悸动， 同时也有一种说不出的不安。