TPO Test2
Origin
cetacean
obvious
cetaceans-whale
porpoise
dolphin
mammal
lung
gill
give birth to 出生,产生
streamline ...做成流线型
absence ,缺席
hind leg
presence ,出席
fluke
blowhole n.(鲸鱼头顶的)呼吸孔
disguise ,伪装
affinity ,喜爱
dwell
unlike ...不同
case ,实例
sea otter 海獭
pinniped
seal
sea lion 海狮
walrus(e)
limb
functional ,有用的
envision ,展望
extinct
marine ;海产的;船舶的
,舰队
fossil record 化石记录
gap ,间隔;裂口
bridge ...之间建立桥梁
miss ,未发现
intermediate ,中级的
transitional ,过渡的
reconstruct
likely
Pakistan
officially
Pakicetus
in honor of 向...表示敬意
embed ...嵌入,埋入
Tethys Sea 特提斯海
consist of 由什么组成
complete ,完全的
skull
archaeocyte
ancestor
provide
precious
jawbone
enlarge ,放大
be filled with 装满
receive
probably ;大概;可能
detect ,探测
adaptation ,改写
diving ,跳水
feature ,面貌
mesonychids
suggest ,暗示;建议
feed on 以…为食
shallow ,肤浅的
adapt
breed ,饲养
skeleton
Basilosaurus
sediment
expose ,显露
Sahara desert 撒哈拉沙漠
plete
include ,包含
tiny
toe
support ,支持
undoubtedly
nonfunctional
vestigial ,残留的
Ambulocetus natans 走鲸,陆行鲸
luckily
a portion of 一部分
pinniped ,
retain ,保持
means ,手段
otion ,运动
structure ,构造
backbone
rear ,,背后
even though 即使
propulsion
constitute ,组成,建立
triangular
indicate ,指出
conceal
yield ,生产
clue ,提示
infer
great numbers of 很多的
remains ,遗骸
exact ,确切的
scarce ,罕见的
valuable ,珍贵的
initial
visible ,有形的
identify ,辨别
locate ;找出(地点)
at the same time 同时,一起
rare ,罕见的
evolution ,演变
essential
high
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