The preposition within has nothing to do with the ordinary sense of the preposition with = “accompanying, alongside, by means of, etc.”. Within means “inside” in spatial, temporal and figurative senses. The hoard was discovered deep within the mound. You must respond to this communication within thirty days.

2018年10月18日 · The train departs within 5 minutes. == The train departs within 5 minutes of now. For points within a perimeter, of is not used: These trees are within my property. The jar is within my reach. "A-B=2 hours or B-A=2 hours" Mathematically, you could think of within as expressing < (less than) or ≤ (less than or equal to), depending on the ...

Within is perhaps a little more formal and dated. There is an important grammatical difference you need to be aware of. Within can be used only as a preposition and an adverb. Inside can additionally be used as a noun and an adjective.

But people often take today to be the first day of the count, so if on Monday someone says "within 3 days" they are thinking day 1=today, Monday; day 2=Tuesday, day 3=Wednesday. There's also the perennial question of whether the last day ends on the multiple of 24 hours from the time when the deadline was given, if it means midnight of that day ...

These are all meant to be done “within x days” of that event occurring. A local pistol licensing agency may tell you to notify them within x number of days if you discharge your weapon anywhere outside of a firing range (you shoot a home invader, for example). You can clearly ONLY do this after the fact.

brackets often show parentheses within parentheses. Smith and her commander (Robert Parnell, also a [helicopter] pilot) both survived the crash. But in some fields, such as law, it's not only acceptable, but customary to use parentheses within parentheses. For what it's worth, he also has this on the use of parentheses:

2022年9月16日 · Within sets a limit of range. It means. occurring inside (a particular period of time) The particularity of your sentence is that this period of time ends before a certain point in the future. Hence the confusion. Within + range of time + before a certain point in the future basically means not earlier than the beginning of that range.

2015年4月29日 · Within 30 days means within any duration of time less than or equal to 30 days (measured from some starting point). The following would all meet the requirement of within 30 days: 1 day, 3.14159265358979... days, 29 days, 29 1/2 days, 29.314159265358979... days. Within 30 days or less means exactly the same thing as within 30 days. That is, the ...

2012年2月3日 · Within is regarded as specifying an upper limit: within two days means maybe today, maybe tomorrow, but no later than two days from now. In is sometimes regarded as more precise: in two days could mean two days from now – particularly with a scheduled event, such as a party. That said, there are exceptions where the word in can be more ...

2017年7月17日 · The usual use of within is "within (measure) of ", and is used for both time and space. Eg Within 200 metres of the building, or within ten minutes of departure. Having said that, in the case of time, there is an ambiguity: does it mean, "in the interval of time starting at the point", or "in the interval of time before and after the point"?*