Complex sentence: The main limitation of Eiffel agents, which distinguishes them from true closures, is that they cannot reference local variables from enclosing scope, but this can easily be worked around by providing additional closed operands to the agent.
Split into simpler sentences: The main limitation of Eiffel agents, which distinguishes them from true closures, is that they cannot reference local variables from the enclosing scope. This limitation is worked around by providing additional closed operands to the agent.