a guard against的意思|示意

The phrase “a guard against” is often used in English to mean to take precautions to protect yourself or someone else against something. It is usually used to talk about protection from something negative, such as illness, danger, or failure. For example, people often use it to talk about how to prevent an illness from happening.

In a medical context, “a guard against” could mean taking steps to prevent certain illnesses or disease, such as getting vaccinated. For example, you could say: “Getting a flu shot every year is a good guard against the flu.”

In a non-medical context, it could mean taking steps to protect yourself against a negative outcome. For example, you could say: “Having savings as a guard against unexpected expenses is a wise financial decision.”

You can also use “a guard against” to talk about protecting someone else from something. For example, you could say: “My grandmother always prepares a healthy lunch for me as a guard against unhealthy eating.”

Finally, you can use “a guard against” to talk about protecting yourself or someone else against something intangible, such as the negative effects of a particular environment or situation. For example, you could say: “She always tries to maintain a positive attitude as a guard against negativity.”

In summary, the phrase “a guard against” is used to talk about taking action to protect yourself or someone else from something negative. It can refer to physical, financial, or emotional protection, and is often used in the context of avoiding illness or danger.