单词：
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hang on to your hat to keep something under your hat 要是你头上根本没有戴帽子，而有人对你说：Hang on to your hat. hang on就是抓住的意思，所以Hang on to your hat从字面上
美国习惯用语
MICHEL MARTIN, HOST: The nation's third president, Thomas Jefferson, is revered as a Founding Father of the nation, principal author of the Declaration of Independence, a scholar and inventor, and he owned 607 human beings - 400 of them lived at his
2018年NPR美国国家公共电台6月
与数字有关的英语词根总结 milli-【千分之一】例：milliampere（毫安）=milli（千）+ampere（安培） centi【百分之一】例：centimeter（厘米）=centi（百分之一）+meter（米） deci【十分之一】例：decibe
英语学习方法
Follow-up examinations of the mice in all these experiments looked at the strengths of connections between nerve cells within part of the brain called the ventral tegmental region. 在所有这些实验中，老鼠的后续检查是观察中脑腹侧被
经济学人科技系列
She found that, while the genetically engineered mice and the BTBR mice had, as expected, reduced levels of L. reuteri, 她发现，虽然经过基因编辑的老鼠和BTBR老鼠体内的罗伊氏乳杆菌果然有所减少， and those with bacteria
经济学人科技系列