The group notes that swallowing fluoridated toothpaste can cause problems.研究院提醒说把含氟牙膏吞下去会产生一些问题.Conclusion Fluoride bioavailability in fluoridated milk is still high and sufficient.结论氟化牛奶中氟的生物利用率是足够高的.Results Fluoridated...
You may not enter the security area without authorization.未经批准不得进入警戒地区。Formal authorization for the trip was given last week.这次行程上周得到正式批准.Anglers are required to obtain prior authorization from the park keeper.垂钓者必须事先得到公...
...the submarine's propulsion system.潜水艇的推进系统We were trying to plot the course of the submarine.我们试图标绘出潜艇的航线图。...submarine caves.海底洞穴Submarine and carrier aircraft were the menaces the great guns could not fight.潜艇和...