他指出生物有与生俱来的寻找食物和躲避捕食者的本能。
(4)nuisance['nju:sns]
n.
1.讨厌的人(或事物);麻烦事[C]
He was nothing but a nuisance and a rascal.
他是一个十足的讨厌鬼和恶棍。
2.【律】妨害行为,骚扰行为[C][U]
The prosecutor indicted him of nuisance.
原告指控他非法妨害他人。
(5)lurk [lə:k]
vi.潜伏;潜藏;埋伏
n.潜伏;埋伏
I don't know what lurks in his mind.
我不知道他心里潜藏着什么。
(6)overrun
n.泛滥成灾;超出限度
vt.泛滥;超过;蹂躏
vi.泛滥;蔓延
The ultimate victim may be the environment, suddenly overrun with trash that was once recycled.
环境将是最终的受害者,囤积的垃圾必将超出大自然的正常负荷。