[化] 抗爆剂(改善爆震性能的添加剂)

英语听力文摘 English Digest 587、气泵上的辛烷值是什么意思？

What Do Octane Numbers Mean? At the gas pump, you have a choice of octane numbers. 87? 93? Whats the difference? To explain octane numbers, lets take an imaginative leap into the internal combustion engine of a car. Inside the cylinders are combustio

发表于:2018-12-31 / 阅读(126) / 评论(0)

英语听力文摘 English Digest

美联社新闻一分钟 2006-07-25

1. Secretary of State Condoleezza Rice is in Jerusalem on a high-stakes diplomatic mission. Her first stop was Beirut where leaders were disappointed that her trip did not bring about an Israeli-Hezbo

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美联社新闻一分钟2006

Petrol prices surge to near three-year high

WELLINGTON, March 23 (Xinhua) -- Fuel prices are at their highest level in nearly three years in New Zealand on Wednesday after the four main oil companies increased their prices by 3 cents. Shell, Caltex, BP and Mobil have raised the price of 91 oct

发表于:2019-02-02 / 阅读(122) / 评论(0)

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留美老师带你每日说英文第779期:如何表现自我

台湾籍旅美老师今天交给我们的句子是： By an ultimate irony, these self-promoters aren't trying to alienate us. They are laboring under the touching but seriously misguided impression that we will like them more for their success. 最讽

发表于:2019-03-05 / 阅读(145) / 评论(0)

留美老师带你每日说英文

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apheta

Aster L.

asylum cord

automobile parking space