The most common seasonal flu virus found in the United States this year is type A(H1N1).

VOA: special.2009.03.04

The trial of Socrates takes place in the year 399 and all of these refer to before the common era 399.

苏格拉底的审判,发生在公元前399年，这些,全都指向共同年代─399年之前。

耶鲁公开课 - 政治哲学导论课程节选

Malaria causes a million deaths per year, and schistosomiasis, which is a parasitic disease, is unfortunately a common cause of death in the world.

疟疾每年造成一百万死亡,而血吸虫病,这是一种寄生虫病,不幸的是,它是世界上很常见的死因

耶鲁公开课 - 生物医学工程探索课程节选

Making New Year's resolutions is a common tradition.

VOA: special.2009.01.01

U.S.officials worry that, even if the virus' spread is eventually contained, it could re-emerge months from now during the northern hemisphere's winter flu season, when more than 30,000 Americans die each year from common influenza.

VOA: standard.2009.05.03

Despite a $1 trillion rescue plan approved by eurozone nations to give low cost loans to member countries, the continuing weakness of Europe's common currency has driven many of the world's leading stock markets to their lowest levels this year.

VOA: standard.2010.05.21