Washing, brushing and varnishing fossils—all standard conservation treatments used by many fossil hunters and museum curators alike—vastly reduces the chances of recovering ancient DNA.
化石清洗、刷洗和涂清漆——所有这些许多化石猎人和博物馆馆长都采用的标准保护措施——极大地降低了恢复古代 DNA 的机会。
2
You can clear even more bacteria out of your mouth bybrushing your tongue.
你可以通过刷舌头清掉更多细菌。
3
You can reduce your chance of needing dental surgery by having regular checkups, brushing and flossing, and avoiding sugary foods and beverages.