Tandem
01
双人自行车
a bicycle built for two or more riders, sitting one behind the other, with both riders able to pedal together to propel the bike
例子
She held onto the handlebars of the tandem as they navigated the turns.
她紧握着双人自行车的车把，当他们驶过弯道时。
02
串联, 前后排列
an arrangement of two or more objects or persons one behind another
