No need to grin like a loon but try to have a happy, friendly expression on your face most of the time.
His office is nondescript, and so is he: blandly handsome, of average height, with an open, friendly expression and rimless glasses that give him a mildly intellectual look.
An Asian man who behaved and looked like Jackie Chan was slowly moving from the back to the front of the bus while staring with a disgusted, perplexed, yet ultimately somehow friendly expression at each seated person.
Look at people directly with a friendly expression.
It passed through a morphology of "friendly" expressions.
I try to put on my friendliest expression and make sure to introduce myself.
These results confirm that S. oneidensis is a user-friendly system for heterologous expression of metalloproteins, including hydrogenase.
In a statement, President Petro Poroshenko offered "sincere congratulations to Donald Trump on being elected president of the United States and to the friendly American nation on democratic expression of will".
Ukrainian president Petro Poroshenko offered his "sincere congratulations" to the Republican "and to the friendly American nation on democratic expression of will".
Next up was a guy in a candy stripe shirt with the expression of a friendly cartoon horse.
