搭配:
be / prove / seem / sound viable
consider / regard sth as viable 认为某事可行
中国经济下行，许多 O2O 模式显得不再可行。
China's economy is going down, and many O2O patterns are not viable.
参考翻译：As China’s economy is going downhill, many online-to-offline (O2O) businesses no longer seem (commercially/economically) viable.
场景:我认为现象级英语社群的学习理念可行
造句:I consider the learning concept of Phenomenal English as viable.
