She sings in clear (if slightly accented) French that is easy to understand without referring to the printed texts.

"Captain Kirk," KerDaq said, his speech slow and slightly accented.

Her English was carefully spoken and slightly accented.

Her English was clipped and slightly accented.

The Russian's English was good but slightly accented.

The doctor spoke in a quiet voice, accented slightly by languages from the European continent of Earth.

Their English, if slightly accented, is perfectly idiomatic.

Mickey Mehrabian was a woman with a Lauren Bacall voice, slightly accented.

Rutger said, her name slightly accented.

The old man's voice was crisp and slightly accented.