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Welcome to the Voice of America's News Words.
欢迎收看美国之音：新闻词汇。
The World Health Organization is warning about the new coronavirus variant first found in South Africa.
南非首次发现了一种新的新冠病毒变异毒株，世界卫生组织就此发出警告。
Contingency
可能发生的事
The WHO says the overall international risk related to the Omicron variant is very high.
世卫组织表示，与奥密克戎变异株相关的总体国际风险非常高。
US President Joe Biden said experts are prepared to develop contingency plans to make changes to COVID vaccines, if needed.
美国总统乔·拜登表示，如果需要，专家们准备制定应急计划，更换新冠疫苗。
A contingency plan is a plan to use if a first plan becomes unusable.
应急计划是在第一个计划变得不可用时使用的计划。
A contingency is an event or situation that may arise in the future.
contingency是指将来可能发生的事件或情况。
