英语听力：探索发现

探索与发现2012年

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英语听力：探索发现科学新发现：我们的大气层-24

This is a genuine iron meteorite, this is believed to have once been part of the core of a long dead planet or asteroid, and this was found right here in this strewn field, this remarkable little shapes, indentations on the surface are called thumbpr

发表于:2018-12-03 / 阅读(197) / 评论(0)

探索与发现2014年

英语听力：探索发现 2012-12-30 冰河新新州 Ice Age Oasis—8

But how did one man and a spear produce the huge force behind this blow? The answer lies with small bits of ivory like this. They were once part of an atlatl, or spear thrower. An atlatl acts as a sort of catapult, magnifying the strength of a hunter

发表于:2018-12-03 / 阅读(189) / 评论(0)

探索与发现2012年

英语听力：探索发现 2012-12-26 冰河新新州 Ice Age Oasis—6

These holes are the unmistakable hallmark of a violent death. Their shape suggest they were made by the teeth of a big cat, but which one? Today theres only one large cat in the region, the Florida panther. Though similar to the cougar at the western

发表于:2018-12-03 / 阅读(191) / 评论(0)

探索与发现2012年

英语听力：探索发现 2012-12-28 冰河新新州 Ice Age Oasis—7

But most significant of all, the jaguar has a tell-tale trademark. Instead of going for the neck or snout like most cats do, it kills with a crushing bite through the skull into the brain. This makes the jaguar prime suspect in this case. Even the gl

发表于:2018-12-03 / 阅读(174) / 评论(0)

探索与发现2012年

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学英语单词

a finger in the pie

accounting technique

acoustical speech power

acrobatic stunts

as fast as steamer can deliver

bandwidth-limited operation

be like talking to a brick wall

bimolecular electrophilic substitution

caenophytic era

chawol-to a4877(jawol-do)

chemical derivatization

Cipher equipment.

delivered horse-power

dielectric standoff voltage

equilibrium poisoning

financial investigation

forest fire destructive power

fuel pump dip stick

Guéckédou, Rég. Adm.de

hardening of seedling

helium-oxygen diving equipment

heptaparallelohedron

Hollerith character set

hopper ballast waggon

inserting input condition

intracanaliculi

liquidambar chinensis champ.

logistic center

made an exhibition of himself

meningococcaemias

oleandra wallichii (hook.) pr.

on the other side of

overnight construction cost

perioval precipitation rate

personal feature

physical chemistry of high polymer system

reckon without sth

recuperative soaking pit

right projective space

roald amundsens

single axle weight

South China Sea Coastal Current

speedometer flexible shaft

stern tube-retaining strip

stream with variable parameter

tablet of acanthopanax senticosus

target data acquisition

the battle of the brands

turtle back poop

water content testing apparatus for leather

yellow phosphorus