obvious
a. easy to see and understand; clear 明显的

vet
n. 兽医

encounter
vt. meet, esp. unexpectedly 遇到，遭遇

reveal
vt. make (sth.) known 展示；揭露

convince
vt. make (sb.) feel sure by the use of argument or evidence 使确信，使信服

feat▲
n. 技艺；业绩，功绩

captivity
n. 被俘；监禁；束缚

dominant
a. ruling; most important or strongest 统治的；占优势的

species
n. （单复同）物种

make a deal
reach an agreement or arrangement, esp. in business or politics 达成交易

conservationist
n. 自然资源保护论者

female
a. 雌的；女（性）的
n. 雌性的动物或植物；女人

gorilla
n. 大猩猩

suspicious▲
a. causing or showing a feeling that sth. is wrong 可疑的；猜疑的

peanut▲
n. 花生

blank
a. without expression; without writing, or other marks 没有表情的；空白

negotiate
vi. discuss in order to come to an agreement 谈判，协商

stake
n. (usu.pl) 奖品；奖金；赌注

pineapple
n. 凤梨，菠萝

maintain
vt. continue to do or have (sth.) 保持；继续

relieve
vt. free (sb.) from pain, anxiety, etc.; ease (pain, anxiety, etc.) 使减轻痛苦或焦虑等；减轻（痛苦或焦虑等）

link
n. 链环；环节；联系
v. join or connect 联系，连接

orangutan
n. 猩猩

undertake
vt. (undertook, undertaken) carry out; take upon oneself (a task, etc.) 从事；承担（任务等）

anthropologist
n. 人类学者

figure out
understand; reason out 理解；推断出

extend
v. (cause to) stretch or reach; make larger or longer 延伸，伸展；扩大；加长

dealing
n. (usu.pl) business relations 交易，买卖

plastic
a. 塑料的

chip
n. 薄片；碎片；集成电路片

expand
v. (cause to) grow larger 扩大，扩展

switch
v. change; shift 转换，变换

foil▲
n. 金属薄片，箔

virtuous
a. showing moral goodness 有道德的；善良的

envy
vt., n. 妒忌；羡慕

grape
n. 葡萄

promptly
ad. immediately 立即地

stem
n. 茎，（树）干，（叶）梗

whale
n. 鲸

cooperate
vi. act or work together 合作，协作

behaviorist
n. 行为主义者

in sb.'s interest(s)
to sb.'s advantage 为了某人的利益

go far
help very much; achieve much success 帮助很大；很有成效

consultant
n. 顾问

behavior
n. the way one acts or behaves 举止，行为

assess
vt. judge the quality, importance or worth of 评估，估量

judgment
n. 判断；意见，看法

mate
n. 配偶；伙伴，同事

thrive
vi. grow strong and healthy; develop well 茁壮成长；兴旺

at first
at the beginning 起先

stretcher
n. 担架

emergency
n. an unexpected and dangerous happening which must be dealt with at once 紧急情况；突然事件

go wrong
stop developing well 有毛病，出故障

halt
v. (cause to) stop 停住，停止

throw up
(infml) vomit 呕吐

apparently
ad. it is clear (that) 明显地

size up
carefully examine (a situation or person) in order to make a judgement 估量，判断

release
vt. set free 释放

slide
v. (cause to) move smoothly along a surface （使）滑动

primate
n. 灵长目动物

evidence
n. sth. that gives a reason for believing sth.; trace 证据；迹象

deceive
v. try to make(sb.) believe sth. that is false 欺骗

inaccessible
a. very difficult or impossible to reach 达不到的；难得到的

original
a. first or earliest 最初的；原始的

colony
n. （生长在同一地方的动物或植物）群，群体；殖民地

male
n. 雄性动物或植物；男子
a. 雄的；男（性）的

gaze
n., v. 凝视，注视

give in
让步；屈服；投降

underneath
prep., ad. under or below 在…下面，在…底下

pea-brained
a. 笨的

turtle
n. （海）龟

survive
v. remain alive in spite of; continue to live or exist after 幸免于；继续存在，幸存

survival n.

disaster
n. an event causing great suffering and damage 灾难

wipe out
get rid of or destroy 消灭，消除

dinosaur
n. 恐龙

horizon
n. 眼界，见识；地平线

Proper Names

Ugene Linden
尤金·林登

Charlene Jendry
查伦·延德里

Columbus Zoo
哥伦布动物园

Colo
科洛（文中指动物名）

Chantek
夏特克（文中指动物名）

Lyn Miles
琳·迈尔斯

University of Tennessee
田纳西大学

Zoo Atlanta
亚特兰大动物园

Gail Laule
盖尔·劳尔

Orky
奥基（文中指动物名）

Corky
科基（文中指动物名）

Helen Shewman
海伦·休曼

Seattle
西雅图（美国华盛顿州西部港市）

Woodland Park Zoo
伍德兰公园动物园

Melati
梅拉蒂（文中指动物名）

Towan
托温（文中指动物名）