Definition: someone who helps another person to do something Level: B2
老师很感激教室里的志愿者助手。
The teacher was grateful for the volunteer ___helper in the classroom.
他提出在当地慈善活动中担任助手。
He offered to work as a ___helper at the local charity event.
当她的朋友搬家时，她经常充当可靠的帮手。
She often serves as a reliable ___helper when her friends move house.
