1·Thoughts of her tugging at my heart, I decided to send a gift as a token of my love.
想法她用力拖在我的心脏,我决定送礼物作为我的爱象征。
1·The upper and lower rings have opposite charges, which allow the motor to contract and release, alternately tugging at the DNA like a ring of hands pulling on a rope.
高环和低环具有相反的电荷,这样的特性可以使其像拉绳子的两只手一样交替地拉住DNA。
2·I like tugging an old rag very much.
我喜欢拉着老抹布很。