使用: to use, to employ, to apply, to make use of...
爷爷: (coll.) father's father, paternal grandfather...
弹钢琴: play piano...
眼睛: eye...
此处: this place, here (literary)...
手里: in hand, (a situation is) in sb's hands...
赶上: to keep up with, to catch up with, to overtake, to chance upon, in time for...
确实: indeed, really, reliable, real, true...
北极: the North Pole, the Arctic Pole, the north magnetic pole...
