Olympic officials are trying to avoid a doping scandal.

奥林匹克官员正在努力避免奋剂丑闻。

The trainer himself admitted doping four others.

驯马还给另外4匹马服过药。

A 250,000-dollar donation amid lingering questioins about whether he was doping or not.

关于他是否服用禁药的疑问已经有一份250，000美元的捐赠。

Sports top court says there was insufficient evidence to prove doping.

体育最高法院表示俄罗斯运动员服用奋剂的证据不足。

The decision followed a long investigation into the alleged doping of Russian athletes.

经过国际奥委会长期对俄罗斯运动员使用奋期的调查，他们才做出这样的决定。

He was found guilty this week of systematic doping violations.

本周，阿尔贝托o萨拉查被裁决有罪，违反了奋剂使用的规定。

OK. Well, this scandal of Russian state-sponsored doping already led to Russia's track and field athletes being banned.

好。俄罗斯由国家运行的奋剂计划已经致俄罗斯田径队被禁赛。

You'll understand what chemists mean when they talk about " doping."

而当化学家谈论“掺杂质”的时，会明白他们在讲什么。

And he was allegedly deeply involved in the state-sponsored doping scheme.

他涉嫌深入参与国家支持的奋剂体系。

She was being investigated by the United States Anti-Doping Agency, USADA.

她正接受美国反奋剂机构USADA的调查。

WADA called for the ban after confirming that the Russian government worked to cover up doping among its athletes.

确俄政府试图掩盖运动员使用奋剂一事后，WADA呼吁奥委会对俄罗斯运动员禁赛。

Another study, published in 2018, simply asked more than 2,000 athletes whether they were doping.

2018年发表的另一项研究只简单询问了2000多名运动员是否服用了奋剂。

Russian officials have denied any state involvement in the doping of athletes.

俄罗斯官员否任何关于国家参与运动员奋剂事件的指控。

A committee of the World Anti-Doping Agency made the recommendation today.

世界反奋剂机构委员会今天提出该建议。

We begin, though with the biggest sports doping story since Lance Armstrong.

我们从始于兰斯·阿姆斯特朗的最大体育奋剂丑闻开始今天的节目。

The World Anti-Doping Agency works to keep certain drugs out of sports.

世界反奋剂机构一向致力于将某些药品拒之体育门外。

Ling Lin is with the doping control department of the Beijing 2022 organizing committee.

凌琳是2022年冬奥组委反奋剂部门负责人。

Russia was suspended last November after a report accused it of state sponsor doping.

去年11月，俄罗斯田径被指发生自上而下服药行为，并因此而遭到禁赛处罚。

The World Anti-Doping Agency banned use of meldonium at the beginning of 2016.

2016年初，世界反奋剂组织开始禁用米屈肼。

Silicon doping involves incorporating impurities into a crystal that mess up its electron balance.

所谓硅的掺杂就是将能破坏电荷平衡的杂质混入晶体。