Over the same period trade protection has increased in the rich countries.
在同一时期，富国的贸易保护增强了。
《柯林斯英汉双解大词典》
2
Hospital staff took care of it during the period, and now an animal protection association is helping it get adopted.
医院工作人员在此期间照顾它，现在一个动物保护协会正在帮助它找收养的地方。
3
The vaccine is derived from the most commonly circulating strain of rotavirus, and also offered good protection against some other strains across the two-year period.