炼苗期烟草苗床是传毒介体有翅蚜着落的靶子中心，是烟田蚜传病毒病的主要初侵染源，为防治烟草蚜传病毒病的关键时期。

During the tobacco hardening period bed of tobacco seedling was the falling target of alate aphids and was the main resource of tobacco virus spread by aphids.

youdao

日本最大的烟草公司“日本烟草”将改造过的拖车放到了市中心的千代田区，这里在去年晚些时候开始对街上所有吸烟的人罚款。

Japan tobacco, Japan's number one tobacco company, placed the remodeled trailer in the city's central Chiyoda ward, which late last year began fining anyone caught smoking in the street.

youdao