exhibit
vt. show demonstrate
mystery
n. sth. that is not known or understood
unsolved
a. not solved or explained
introduction
n. a written or spoken explanation at the beginning of a book or speech
ambiguity
n. the possibility of two or more meanings; vagueness 模棱两可；意义不明确
ambiguous
a. having more than one possible meaning, permitting more than one possible interpretation or explanation
premedical
a. preparing for the study of medicine
outset
n. the beginning
engross
vt. take up all of; absorb
engrossing
a. (not of a person) very interesting
adversary
n. a person or group to whom one is opposed; opponent or enemy
adverse
a. hostile; unfavorable
Darwinian
a. of Charles Darwin or his theory of evolution
dispute
n. a quarrel, disagreement
feature
n. an important part or quality
reluctance
n. unwillingness
reluctant
a.
doctrinal
a. of or having to do with doctrine
doctrine
n. a principle or set of principles (esp. of a religious or political kind) that is taught 主义；教条，学说
readily
ad. without difficulty, easily; without delay, quickly
perceive
vt. become aware of by seeing, hearing, tasting, smelling or touching; get an understanding of
awareness
n. the quality or state of being aware
ethologist
n. a person who studies ethology (the individual and comparative study of animal behavior, including that of man) （个体）生态学家；行为学家
consciousness
n. the condition being aware and able to understand what is happening; awareness
creature
n. a living person or animal
capitalize
vi. (on) profit by; use to one's own advantage included
hazard
vt. venture; risk
exception
n. the fact of being left out; (a cause of) not being included
chimpanzee
n. a small African ape with dark hair黑猩猩
whale
n. a large sea animal that resembles fish but breathes air 鲸
dolphin
n. a sea animal that has a snout like a beak 海豚
contingency
n. a chance happening; uncertain event
automatic
a. done or produced by the body without thought or control
automatically
ad.
dislike
vt. consider unpleasant; not like
generous
a. willing to give or share; unselfish 慷慨的
