重點講解：
1. from side to side 左右,來回(移動)；
She was shaking her head from side to side.
她搖頭晃腦v0lgmOO2r=eNgVb。
2. compared to 與…相比；和…比起來；
Compared to people living only a few generations ago, we have greater opportunities to have a good time.
比起上幾輩人，我們有更多機會享受生活~1-#U10~BFfwA。
3. charge up 給(電池)充電；
There was nothing in the brochure about having to drive the car every day to charge up the battery.
手冊里只字沒提這車要天天開，以給電池充電[&vb4R~RT8N*。
4. weigh down 使負荷太重；壓得…行動不便；
He took off his shoes. If they had to swim, he didn't want anything weighing him down.
他脫下了鞋%I&8p*20H3joDYD[f。如果他們不得不游泳的話，他不想讓任何東西成為負擔~3a_6@SXC~qpBb(nie。