名词
中文翻译：Unknown
同义词：
['support', 'backup', 'safeguard']
例句：
-
1. We need to have a backup plan in case of emergency.
我们需要有一个应急计划作为后备。
-
2. The company has a strong support system to back up its operations.
该公司有强大的支持系统来保障其运营。
-
3. He backed up his argument with facts and figures.
他用事实和数据来支持他的论点。