The spitting habit became the target of public health authorities after the discovery of the tuberculosis bacillus in 1882 by the German biologist RobertKoch.
随地吐痰的习惯成为公共卫生机构的根除目标，是在1882年德国生物学家科赫发现了肺结核杆菌之后。
2
The RobertKoch Institute, Germany's national health center, said the rate of reported infections appeared to be tapering off.
德国国家健康中心Robert Koch研究所说感染的报告趋势已经趋向结束。
3
To defend its reputation, Koch Industries hired Robert Strauss, then a premier Washington lobbyist; the company soon opened an office in the city.