英语听力：探索发现

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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(151) / 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(156) / 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(154) / 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(141) / 评论(0)

探索与发现2012年

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学英语单词

angle ratio of steering gear

associated accessories

atresia of uterine tube

biogenic process

cholinphospholipid

chromium plated

columns of rugae of vagina

continuous casting-direct rolling

double coated electrode

downward price trend

eat out of sb.'s hand

engine mounting ring

equivalent linear damping

extraction heater pipework

fibre-optic visible-infrared spinscan radiometer

fighting frenches

file status data item

get something down to a fine art

globe lightning

high tensile steel wire

high vacuum melting furnace

hormonal regulation

housing standard

hovering vessel

hybrid micro circuit

hydroxyethyl methacrylate copolymer solution

hyperdopaminergic

internal premises

Kultschitsky's cell

lime saturation value

linear learning machine

longitudinal equilibrium

Medinilla yunnanensis

move to pacing and shipping

nitrophenylpropiolic acid

no-load testing

painful tubercles

passenger effects

pile forming rig

pori abdominales

postnormal occlusion

quotations on market

radius of inertia

reducible indirect hernia

release quarantine

right over things

self-propelled frame

tetrabromoethane

trim-tab control

wireless message format