His speech has persuasiveness.

His ability to concentrate is astonishing.

The extent of his vocabulary strength indicates that he is an avid reader.

Her strong gaze gave a strong impression even before she spoke.

Beautiful Chinese fountaingrass is growing in my garden.

The secret to his success lies in his amazing fortitude.

He has amazing stamina.

His stamina is astonishing.

The van der Waals force is an important concept in explaining intermolecular interactions.

He has a high ability to hold a conversation, so he can get along with anyone quickly.