How to Use "expressionless" with Example Sentences

1. Are you not blinded by such expressionless sirens ?
2. Parents were instructed to either stare at the researcher with an expressionless face or to point and laugh at her .
3. Without the language , painted without expressionless smile .
4. Inside the packed courtroom in lower manhattan on thursday , mr rajaratnam , 54 , sat between two lawyers , expressionless as the judge read the sentence .
5. The united states seemed expressionless said lightly , but heard this , that two yuan edge not in general .