1·Second, heels are quite functional for defense against oncoming enemies, who can easily be scared away by threatening them with a pair of these sharp, deadly fashion accessories.
其次，高跟鞋在防御迎面而来的敌人时非常有用，这些敌人很容易被这些锋利的、致命的时尚配饰吓走。
2·Many scientists and experts warn that rampant use of antibiotics in animal feed, like penicillin and tetracycline, will breed an epidemic that medicine has no defense against.
许多科学家和专家警告说，在动物饲料中滥用抗生素，如青霉素、四环素，会滋生流行病，而这种流行病是没有医药可以防御的。
3·That's because estrogen confronts a certain enzyme that often hinders the body's first line of defense against bacteria and viruses.
那是因为雌激素会对抗一种特定的酶，这是一种会妨碍身体防御细菌病毒的第一道防线的酶。
4·Alveolar macrophages (AM), which are enhanced by GM-SCF, are an essential piece of the innate immune response and are known to contribute to host defense against flu infections in animal models.
肺泡巨噬细胞(AM)被GM - SCF强化，这是先天免疫应答的重要部分，已知在动物模型有助宿主防御流感病毒感染。
5·Though defeated, our team put up a plucky defense against their taller and huskier opponents.
虽然战败，但是我们的队友依然勇敢地防御他们高大、强壮的敌手。