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。

Olympic officials are trying to avoid a doping scandal.

奥林匹克官员正在努力避免兴奋剂丑闻。

The trainer himself admitted doping four others.

驯马师承认还给另外4匹马也服过药。

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兴奋剂的证据不足。

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，违反了兴奋剂使用的规定。

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兴奋期的调查，他们才做出这样的决定。

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兴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”的时候，你也会明白他们在讲什么。

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

她正接受美国反兴奋剂机构USADA的调查。

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

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