| 单词 | fall behind |
| 释义 | fall behind fall behind — phrasal verb with fall /fɔːl/ aep /fɑːl/ verb (fell, fallen) ► F0 to fail to do something fast enough or on time: » He was ill for six weeks and fell behind with his schoolwork.» I've fallen behind with the mortgage payments.Thesaurus+: ↑Failing and doing badly |
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