as a matter of course什么意思

as a matter of course的音标：as a matter of course的英式发音音标为：[æz ə 'mætə ɔv kɔː(r)s]as a matter of course的美式发音音标为：[æz e 'mætɚ ʌv kɔː(r)s]...

If police are carrying arms as a matter of course then doesn't it encourage criminals to carry them?如果警察每天理所当然地携带武器，这难道不会促使罪犯也持械吗？I lock the door as a matter of course.我当然要把门锁上.I check my in - tray every morning as ...