21681
How should I read the "~" mark that stands for range, as described in the
title?

I saw this in the following sentence:

> 3~4行ごとに1行あけると読みやすい。
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2015-02-07T08:17:07.073
21679
2021-02-23T09:24:58.920
2017-03-14T08:49:23.977
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question
readings numbers symbols
How to read: the "~" (tilde) in "3~4 行"
There is no strict rule about this. It's best not to use this "～" symbol
denoting a range, when it's meant to be read out loud by someone.

But if you really have to, you can read the "～" symbol as "から" in many cases.

>   * 3～4行ごと さんからよんぎょうごと
>   * 2月3～5日 にがつみっかからいつか
>   * 15～17階 じゅうごかいからじゅうななかい or じゅうごからじゅうななかい
>   * 500～600円 ごひゃくえんからろっぴゃくえん or ごひゃくからろっぴゃくえん
>

Note that this sounds like you strictly specify the range of numbers. If you
say like this, it means "three or four lines; not five nor two".

Alternatively, in this case, you can use the common idiom "さんよん", which more
vaguely refers to the range _around_ it.

>   * 3～4行ごと さんよんぎょうごと
>   * 2～3日間 にさんにちかん
>   * 4～5回 しごかい
>   * 500～600円 ごろっぴゃくえん
>

These are closer to English "a few", "several", "a couple of", etc.
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2015-02-07T09:45:41.243
21681
2015-02-07T10:09:23.987
2015-02-07T10:09:23.987
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21679
answer