Fortunately, fatalities are fairly rare; the spiders are nonaggressive and bite only in self-defense, such as when someone accidentally sits on them.

令人庆幸的是因黑寡妇叮咬死亡者相当罕见。黑寡妇攻击性不强，只有自卫时才咬人，比如有人意外地坐在它们身上。

youdao

Overexpression of MAGL in nonaggressive cancer cells recapitulates this fatty acid network and increases their pathogenicity phenotypes that are reversed by an MAGL inhibitor.

在非侵袭性癌细胞中过表达MAGL重现这一脂肪酸网络，并增加其被MAGL抑制剂逆转的致病性。

youdao

The disarmed would be the law-abiding, nonaggressive members of society, who, unfortunately, would find themselves less able to defend themselves against the predations of those with guns.

FORBES: Gun Control: 10 Observations On A Controversial Subject