Our school moved classes online during the flu pandemic.
我們學校在流感大流行期間改為線上上課。
Many doctors worked day and night in the flu pandemic.
許多醫生在流感大流行時日以繼夜地工作。
Scientists study past flu pandemics to prepare for the next one.
科學家研究過去的流感大流行，以準備下一次。
The city gave free masks to families during the flu pandemic.
市政府在流感大流行期間發送免費口罩給家庭。