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(204) / 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(194) / 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(196) / 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(177) / 评论(0)

探索与发现2012年

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学英语单词

acorn barnacles

appropriate route

be knocked bowlegged

bell-metal resonance

central discharge

circuit resistance

cryogenic expansion machine

declarative mood

dung floor cleaner

Ephdra equistina Bunge

galerkin spectral method

geraesite (gorceixite)

Grosser Feldberg

heracleum candicans wall ex dc.

hydraulic motor

ideal kernel of a homomorphism

information offer

integrated routing and bridging

Macfarlane, Mt.

network operation procedure

non-selfquenching

nor-epinephrine

offset frequency

orange flower cream

patent Axminster carpet

petty officer of the watch

phytotherapeutically

planning variable

quarternary exogenetic ore deposits

roll over machine

sideway force coefficient routine investigation machine

slip circle method

southern flounder

strain ga(u)ge measurement

strut insulator

thermal death inactivation point

tinkering around

unmagnificently

unpicturesqueness

vanadous iodide

well site calibrator