跟踪: to follow sb's tracks, to tail, to shadow, tracking...
礼物: gift, present...
摩托: motor (loanword), motorbike...
掐: to pick (flowers), to pinch, to nip, to pinch off, to clutch, (slang) to fight...
棒: stick, club, cudgel, smart, capable, strong, wonderful, classifier for legs of a relay race...
不成: won't do, unable to, (at the end of a rhetorical question) can that be?...
注释: marginal notes, annotation, to annotate, to add comments to text...
慰劳: to show appreciation (by kind words, small gifts etc), to comfort...
亲身: personal, oneself...
单调: monotonous...