Those who did well on the memory test had an increase in levels of immunoglobulin A, an antibody that's the body's first line of defense against germs.

那些在记忆测试中表现良好的人，其体内的免疫球蛋白 A 水平会升高。免疫球蛋白 A 是一种抗体，是人体抵御细菌的第一道防线。

youdao

A positive attitude is your first line of defense.

积极的态度是你的第一道防线。

youdao

That is why a positive attitude is your first line of defense.

因此，积极的态度才是你的第一道防线。

youdao

The ego is the first line of defense between the self and the outside world.

VOA: special.2010.04.13

He says agents working at airports, seaports and border crossings are often the first line of defense for victims.

VOA: standard.2010.07.23

According to Goldman, guidance is the first line of defense, rather than more QE.

FORBES: Bernanke Put Here To Stay With QE Through Late-2014 And No Rate Hikes Until 2016: Goldman

Next-generation firewalls (NGFWs) have evolved into the first line of defense against computer malware.

FORBES: Next-Generation Firewalls: What Makes Them Next-Gen

Since dopamine agonists have lesser side effects, they are currently the first line of defense against PD.

FORBES: Putting A Patch On Parkinson's Disease