Definition
to take preventive measures to avert a potential event or situation from occurring
預防；避免
To guard against infections, the doctor recommends getting a flu shot every year.
為了預防感染，醫生建議每年接種流感疫苗。
Companies must implement security measures to guard against data breaches.
公司必須實施安全措施以防止數據洩露。
Individuals should save for retirement to guard against potential financial difficulties in the future.
個人應該為退休儲蓄，以防未來可能出現的財務困難。