英语听力：探索发现

探索与发现2012年

探索与发现2014年

探索与发现2012年

探索与发现2014年

探索与发现2013年

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探索与发现2013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(95) / 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(102) / 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(84) / 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(85) / 评论(0)

探索与发现2012年

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学英语单词

acid resisting concrete

be indigenous to

bring someone to grips with

capitals of niger

carbon colour test

choledocholithiasis

cubic closedpacked structure

cultural background

cutting nippers

diabase spessartite

direct labo(u)r expense

double strength fertilizer

enforcement mechanism

extra wage system

genus chimaeras

genus cortinariuss

heaviness in waist

hermetically sealed

homo sapiens neanderthalenses

horizontal detail

hydrogeologists

kinematic(al) boundary condition

liophile or lyophile colloid

marrow-iron-turnover

mass-transport overpotential

mold releasing agent

not on speaking terms with

nucleus juxtaolivaris

organic nitrogen

portable microscope

preloaded bearing

Premium Reserves

records management

repeated-stress

San Juan de Ciénaga

sequence of operation

short gyri of insula

thermoplastic memory system

thoracopneumograph

torpor peristalticus

tropospheric scatter transmitter

type classification

water break section