動詞 alternate:

1. go back and forth; swing back and forth between two states or conditions
   同義詞：alternate, jump
2. exchange people temporarily to fulfill certain jobs and functions
   同義詞：alternate
3. be an understudy or alternate for a role
   同義詞：understudy, alternate
4. reverse (a direction, attitude, or course of action)
   同義詞：interchange, tack, switch, alternate, flip, flip-flop
5. do something in turns
   同義詞：alternate, take turns

形容詞 alternating:

1. (of a current) reversing direction
2. occurring by turns; first one and then the other
   同義詞：alternate

1. A movement from and back to a mean position or axis in an oscillating or alternating motion.
   移動從中間位置或軸線向外或向后的振蕩或依次的運(yùn)動
2. A device used to convert direct current into alternating current.
   反用換流器用于變直流電為交流電的儀器
3. A pattern of drumbeats characterized by four basic beats and alternating left-handed and right-handed strokes on the successive primary beats.
   擊鼓聲(咚噠咚咚)一種有四個基本鼓點(diǎn)且第二個鼓點(diǎn)從左手換到右手的鼓擊形式
4. Characterized by or exhibiting an alternating upward and downward movement.
   一上一下的上下的交互運(yùn)動為特征的或表出現(xiàn)上下的交經(jīng)運(yùn)動的