沿著線往北：方向和位置
這一組是「你在線上」：不是往北移動，就是位在線的北端。
adjective · B2
Going towards the north, or lying in the northern part of an area.
向北的／偏北的
核心畫面
One way to hold it: a single line drawn between you and the north, with an arrow on it. Sometimes you are the thing travelling up that line, or sitting at the far top of it. Sometimes something else is coming down it towards you — and that is the wind. Same line every time; only the traffic on it changes.
可以想成你跟北方之間有一條線，上面畫了一個箭頭。有時候是你自己沿著這條線往上走，或者坐在這條線最上頭的位置。有時候是…更多收起
可以想成你跟北方之間有一條線，上面畫了一個箭頭。有時候是你自己沿著這條線往上走，或者坐在這條線最上頭的位置。有時候是別的東西沿著這條線往下來找你——那就是風。線一直是同一條，變的只是誰在上面移動。From the word’s history
From norther + -ly. The ending -ly here means having to do with, not the adverb -ly, which is why the word can serve as adjective, noun and adverb without changing shape.
由 norther（北）加上 -ly 造成。這裡的 -ly 是「跟…有關的」，不是副詞的那個 -ly。也因為這樣，同一個形狀可以當形容詞、名詞和副詞。
Wiktionary entry supplied in this packet (source_ref kaikki:3f6f69a190036ae4:1239832043), etymology_text: From norther + -ly.
Two branches
沿著線下來：從北方吹來的風
線沒有變，但這次是風沿著它往下來找你。英文替風命名一律看「它從哪裡來」，所以方向感覺整個反過來。
adjective · B2
Used about wind: blowing from the north.
北來的（風）