airtight
airtight
air∙tight / ˈɛrˌtaɪt ; ˈeətaɪt /
◙adj
1. not allowing air to get in or out
• 气密的，密封的:
»airtight containers
密封容器
2. planned or done so carefully that there is no chance of any problems or mistakes
• 万无一失的; 无懈可击的:
»an airtight alibi
无懈可击的不在犯罪现场的证据
