The researchers' first subject was the tobacco plant.

研究人员第一个研究对象是烟草。

If the tobacco plant is eaten, it can quickly poison a person.

如果吃了烟草，人就会很快中毒。

Accepting his offer, I confessed that I had never before seen a tobacco plant; family stories of Zelma were the closest I had ever come to a tobacco farm.

我欣然接受他的邀请，坦白的说，之前我从来没见过烟草长什么样子，有关我曾祖母的烟草历史是我所接触到的有关烟草农场最有联系的故事。

And they do, there's the opium poppy and the tobacco plant, and both of those act on the brain.

事实上，罂粟和烟草都对大脑产生影响。

The Spaniards found the natives in the West Indies using the tobacco plant. They took seed to Europe where its use soon spread to other countries around the Mediterranean Sea.

西班牙人发现西印度群岛的土著居民种植烟草，就把种子带到了欧洲，很快，烟草种植就在地中海附近的国家传播开来。

Drought stress had effects on physiological and biological activities of tobacco plant, and then may affect the yield and quality of tobacco leaves.

干旱胁迫影响烟株体内各种生理生化活动，进而影响烟叶产量和质量。