面對你的那一面
最具體的一支，也是核心畫面本身：一個扁平的東西有兩面，這是朝著你的那一面。
noun · C2
The front of a coin, a medal or a badge — the side with the head or the main design on it. The other side is called the reverse.
（硬幣、獎章的）正面
核心畫面
One way to hold obverse: a coin lying in your palm, head up. The side looking back at you is the obverse; turn it and you get the reverse. Two things follow from that picture. First, the word is about the side that faces the viewer, which is where the adjective comes from. Second, the two sides belong to one object, so when the word is used about situations it never means an opposite standing somewhere else. It means the other face of the very thing you are holding, which is why defeat can be called the obverse of victory.
可以想成：一枚硬幣躺在你掌心，頭像朝上。回望著你的那一面就是 obverse，翻過去就是 reverse。這個畫面帶…更多收起
可以想成：一枚硬幣躺在你掌心，頭像朝上。回望著你的那一面就是 obverse，翻過去就是 reverse。這個畫面帶出兩件事。第一，這個字講的是「面對看的人那一面」，形容詞就是從這裡來的。第二，兩面屬於同一個東西。所以把它用到情境上時，它從來不是指擺在別處的相反詞，而是你手上這件事翻過來的那一張臉。也因為這樣，失敗才會被說成勝利的 obverse。From the word’s history
The packet's source gives only this much: from Latin obversus, entering English in the 1650s. It gives no gloss for the Latin, so nothing further is claimed here. What the source does record is the adjective sense 'turned or facing toward the observer', and that sense sits closest to the core image.
來源只給到這裡：來自拉丁文 obversus，大約 1650 年代進入英文。它沒有為那個拉丁字附上字義，所以這裡不多說。來源確實記下來的是形容詞「轉過來面對觀看者的」，而這個意思離核心畫面最近。
Wiktionary entries supplied in this packet (kaikki:3f6f69a190036ae4:818370782 and :818379777): 'From Latin obversus, 1650s.'
Two branches
一體的另一面
把硬幣的畫面借到看不見的東西上：一個處境也有兩張臉，翻過去才看見。
noun · C2
The opposite of a particular situation or feeling — the other face of the same thing, the part that comes with it.
反面；一體的另一面