This environment may not exist for many machines.
对于许多机器，这种环境可能不存在。
此文件可能还不存在。
This, of course, makes it permissible to hope that other early recordings may still exist.
当然，这也让人们有理由期待其他早期录音的存在。
Life may exist on this planet.
这颗行星上可能存在生命。
However, this kind of economy may be unlikely to exist permanently.
但这种经济未必能够长久存活下去。
However, this kind of economy may be unlikely to exist permanently.
但这种经济未必能够长久存活下去。
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