每次呼叫固定路径选择

现在完成进行时(The Present Perfect Continuous Tense)表示由过去某时持续到现在的动作,由have(has)been+现在分词构成: It has been raining for three hours. 一连下了三个钟头的雨。 She has been working the whole mo

发表于:2018-12-18 / 阅读(61) / 评论(0) 分类 英文语法词汇

[00:10.06]Gehrig continued to improve as a player. [00:14.05]By 1924, pitchers for opposing teams were having bad dreams about Lou Gchrig and Babe Ruth. [00:23.04]Ruth hit sixty home runs that year. [00:26.36]Gchrig hit forty seven and won the Americ

发表于:2018-12-26 / 阅读(86) / 评论(0) 分类 美国英语听力80篇

Dr. David Wilber performs a procedure called catheter ablation to treat patients with atrial fibrillation at Loyola University Medical Center in Illinois A relatively new procedure is proving to be more effective in treating patients with irregular h

发表于:2019-01-13 / 阅读(45) / 评论(0) 分类 VOA标准英语2010年(二月)

Radiation Might Help Heart Regain its Rhythm That beeping sound is the normal beating of a heart. But here's what the same heart sounds like, during a bout of ventricular tachycardia, or VT the racing beats are caused by an electrical short circuit i

发表于:2019-01-20 / 阅读(34) / 评论(0) 分类 2018年科学美国人1月

-Penny: Ooh, is this one of those paintball guns? paintball gun: 彩弹枪 paintball: 彩弹 哦这就是那彩弹枪? -Leonard: Yeah. You ought to come, out with us sometime. Yeah: yes的口语形式 ought to: 应该 come out with: 和一起出去 是

发表于:2019-01-28 / 阅读(34) / 评论(0) 分类 生活大爆炸第二季

Key Sentences(重点句子) 146.The connection was bad. 通话情况很糟。 147.There was a lot of echo and I couldn't hear well. 回音太多,我听不清楚。 148.I'll connect you agian. 我再为您接通一次。 149.I've just

发表于:2019-03-11 / 阅读(119) / 评论(0) 分类 实用英语