There are only two possibilities.
不外两种可能。
Not a person for such a long time - there are only two possibilities, either being brainwashed lost memory, or is dead.
一个人这么长时间没消息，只有两种可能，要不被人洗脑失去记忆，要不就是死了。
My position both privately and publicly expressed over the last dozen years or more, is that there are only two possibilities, either.
过去十几年或更长时间以来，无论是在私下或是公共场合，我都明确表示，这件事情只有两种可能。
There are only two possibilities: a completely automated test that can run entirely unattended, and a "one-shot" manual test that is run once and then thrown away.
有二种可能性：一个完全地自动化测试在无人看管时可以被彻底的运行，并且一个“只有一次的”手工测试只被运行一次然后丢掉。
Also, alternative should imply that there are only two possibilities, while there can be any number of options, although many people use alternative where there are more than two.
另外，alternative应当意味着总共只有两种可能性，而option可多可少，不过很多人在有两种以上可能性时也使用alternative。
Also, alternative should imply that there are only two possibilities, while there can be any number of options, although many people use alternative where there are more than two.
另外，alternative应当意味着总共只有两种可能性，而option可多可少，不过很多人在有两种以上可能性时也使用alternative。
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