There are four basic alternatives; they are described briefly below.

有4個基本的選項，簡述如下。

I have given the matter much thought, examining all the possible alternatives.

這個問題我已經考慮了很多，分析了各種可能的選擇。

These alternatives were clear to the philosophers of ancient Greece.

對古希臘的哲學家來說,兩者必居其一是明顯的.

Facing the practical situation, I considered various alternatives.

面臨眼前的情景, 我考慮過各種不同的辦法.

Someone must decide a course of action from among alternatives.

人們必須在各種可行方案中決定一項行動方案.

Lessons of experience show that these are not the real alternatives.

經驗教訓表明,這些并不是真正的出路.

Not to be a fool might not be worth the difficult alternatives.

是不是做傻瓜,看來也不值得煞費苦心去作出選擇.

The appearance of alternatives, the possibility of an option, is an illusion.

可選方案的出現, 作出選擇的可能性是一種幻覺.

Between human beings there are only two alternatives, either brotherhood or crime.

人與人之間的關系只有兩種選擇, 不是和睦相處便是爾虞我詐.

In particular, what alternatives and environmental impacts must be discussed?

特別是, 必須討論哪些替代方案以及哪些環境影響.