The noun 'backup' refers to support, assistance, or obstruction.
名词 'backup' 指支持、后援或阻塞。
| 单词 | backup |
|---|---|
| 发音 | ['bækʌp] |
| 释义 | n. 支持；后援；阻塞 |
| 词序 | 5549 |
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