But, of the vertebrates, unpredictable Nature selected only snakes (and one lizard).
不过，当它们相互撕打时，毒液就成了利弊参半的武，可以杀死对方，也可以被对方的毒液杀死。
新概念英语第四册 Lesson 20 Snake poison

📚 句中词汇解析

从本句中提取的重要词汇

nature ['netʃɚ] 词频1 词根: 出生
n. 自然;天性;天理;类型;
💡 nat出生的+ure状态→出生状态→天性
"the adversarial nature of the two-party system"
两党制的对抗性
近义：milieu, surroundings, circumambiency, medium, ecosystem, environment
unpredictable ['ʌnpri'diktəbl] 词根: 说
adj. 无法预言的;不可预测的; n. 不可预测的事;
"The result is entirely unpredictable."
结果是完全无法预料的。
近义：inconsistent, inconstant, irregular, undependable, unexpected, unforeseeable 反义：ascertainable, determinable, foreseeable
lizard ['lizəd] 词频4
n. 蜥蜴;
"The lizard darted out its tongue at the insect."
蜥蜴伸出舌头去吃小昆虫.
近义：skink, swift, alligator, gecko
selected [si'lektid]
adj. 经由选择的，挑选的; v. 选择，挑选( select的过去式和过去分词 );
"He hasn't been selected for the team."
他未能入选进队。
近义：nominated, pedigreed, picked, preferred, select, chosen
vertebrates
n. 脊椎动物（vertebrate的复数）

📚 更多「新概念英语第四册」例句

The episode could reasonably serve as a unique epic of royal espionage!
这一幕历史可以说是王室谍报活动中最精彩的篇章。
Marine Studio biologists have pointed out that, however intelligent they may be, it is probably a mistake to credit dolphins with any motive of lifesaving.
海洋摄影室的生物学家指出，无论海豚多么聪明，认为它们有救人的动机可能是错误的。
if there is any effect of noise upon mental health it must be so small that present methods of psychiatric diagnosis cannot find it.
如果噪音对精神健康有影响的话，那也一定是微乎其微，以致现代的精神病诊断方法还发现不了。
It is recounted of Thomas Carly1e that when he heard of the illness of his friend,
他听说朋友病了，
who put his questions to nature instead of to the ancients,
他向自然界而不是向古人提出问题，
in the end, is reabsorbed into the great ocean of life.
但最终又被重新融进生命的大洋。