例句
Only a handful of studies have analyzed the heart effects of smokeless tobacco, and the findings are not as strong as the researchers expected.
只有少数的几个研究分析了无烟烟草对健康的影响，得出来的结并不如所预期的那样联系紧密。
If you smoke or use smokeless tobacco, your dentist or dental hygienist can show you where a sore, spot, patch or lump is most likely to appear.
如果你吸烟或者无烟烟草，你的牙医或牙科保健师会告诉你哪里很可能会出现溃疡，斑片，碎屑或者肿块。