求翻译：实习期间通过投资交易软件在美国纳斯达克证券交易市场进行证券的买卖活动，共为公司盈利8000元左右，投资收益率在20%是什么意思？

Internship in the United States by investing in Nasdaq trading software stock market trading securities, with a total profit of 8,000 yuan for the company, the investment rate of return of 20%

Through the investment transactions during the training software in the Nasdaq stock market for securities trading activities, a total of around $8000, corporate profits in 20 per cent return on investment

Practice period carries on the negotiable securities through the investment transaction software in the American Nasdaq negotiable securities trading market business activity, altogether gains for the company about 8000 Yuan, investment returns ratio in 20%

Practice period by investing in trading software in the United States NASDAQ stock market for securities trading activities, total profits for the company about $ 8,000, rate of return on investments in 20%

Business activities of carrying on the securities while practising on the trade market of American Nasdaq securities through the exchange software of the investment, it is about 8000 yuans to make profits for the company altogether, the investment yield is in 20%