Alternate index
[計] 替換索引, 替換下標
?? 詞語組成解析
alternate
['?lt?n?t]
adj. 輪流的;交替的;間隔的;代替的;
vi. 交替;輪流;
vt. 使交替;使輪流;
n. 〈美〉（委員）代理人;候補者;替換物;
altern 其他的，改變狀態 + ate 表示做、造成 → a. 交替的,輪流的;間隔的；vi.(使)交替,(使)輪流
index
['?nd?ks]
n. 索引;<數>指數;指示;標志;
vt. 給…編索引;把…編入索引;[經濟學]按生活指數調整（工資、價格等）;
vi. [機械學]轉位;
in(in)+dex(proclaim)→指針；索引；指數；食指；指標
??? 情景例句
I really want to get this job.
我真的很想得到這份工作。
What time does it get in?
什么時候到達那里？
but we were afraid that the strength of the current would prevent its landing anywhere before it became exhausted.
但我們擔心，洪水力量將使它上岸之前就筋疲力盡了。