使用不同的浏览器和设备访问,结果相同,排除是特定浏览器或设备的问题。 Everybody is lacking the key level. The use of prepositions is idiomatic. So it varies based on the speaker. Regarding your 2nd issue about context: provided that English Ordinarily likes to adopt the shortest phrasing doable, the for a longer time form "free of demand" can be utilized as https://pornx.cam/