upgrade
/ˌʌpˈgreɪd/
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v./n. 升級；提升
- After upgrading its coffee machines, the café now serves twice as many customers an hour. 升級咖啡機之後，那家咖啡館現在每小時能服務兩倍的客人。
其他意思
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v. 升級, 提升
If equipment or services are upgraded, they are improved or made more efficient.
- Helicopters have been upgraded and modernized
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n. 升級
也出現在：
字根
grad, gress 走；等級
up + grad + e往上 + 等級 + —