
Originally Posted by
Throbert McGee
For example, the story Пингвины ("Penguins") has the sentence они не умеют летать, зато очень хорошо плавают ("they don't know how to fly, but they swim very well") -- so right there you've got a great illustration of how "indeterminate/multidirectional" Verbs Of Motion are used. (I.e., you say "Они хорошо плавают", not "Они хорошо плывут".)