IF you spot trouble and find yourself rationalizing inaction, force yourself to stop and
evaluate the situation instead of walking on,"says Staub. Then try to involve other people; you don't have to take on the entire responsibility of being helpful."Sometimes
it's just a matter of turning to the person next to you and saying, 'It looks like we should
do something.'Or asking someone if an ambulance has been called and, if not, to call for
one. Once you take action, most people will take their cues from you and pitch in."
pitch in (片語)配合