3N-COUNT 漏洞;空白;缺口 If there is something missing from a situation that prevents it being complete or satisfactory, you can say that there is a gap . 漏洞;空白;缺口
We need more young scientists to fill the gap left by a wave of retirements expected over the next decade.
我们需要更多年轻的科学家来填补预计未来10年退休高峰带来的人才缺口。
Like a good businessman, Stewart identified a gap in the market.