focus 名词时后面介词不能用for，只能用on，因为focus on为固定搭配，中文意思是“专注于，集中于”
他说他突然关注外交政策并不是受总统政治的驱使。He said his sudden focus on foreign policy was not motivated by presidential politics.
focus 名词时后面介词不能用for，只能用on，因为focus on为固定搭配，中文意思是“专注于，集中于”
他说他突然关注外交政策并不是受总统政治的驱使。He said his sudden focus on foreign policy was not motivated by presidential politics.
