Alternation switch
[計] 交替開關, 變更開關
?? 詞語組成解析
alternation
[??:lt?:'nei??n]
n. 交替，輪流，間隔;交替工作;更迭;變換;
switch
[sw?t?]
n. 開關;轉換，轉換器;軟鞭子;[信]接線臺;
vt.& vi. 轉變，改變;轉換;關閉電流;鞭打;
vt. 轉換;揮動（棍棒、鞭子等）;迅速轉動;鞭打;
vi. 交換;調換;
??? 情景例句
Hi, this is Tony, I have a flat tire, could you come and pick me up?
你好，我是托尼，我的車爆胎了，你能來接我嗎？
Tell us about your post-purchase servicing.
告訴我們有關你們售后服務的情況。
The wall behind looks a bit grey and dull. What can we do to make it look less ugly?
后面那堵墻看起來有點暗。我們能不能讓它漂亮點？