two-sided
/ˈtü-ˈsī-dəd/ (ame, mw)
two-sided — 形容詞
1. An object that is two-sided has a usable surface on both its front and its back,
雙面的
正反兩面都可使用的
An object that is two-sided has a usable surface on both its front and its back, so you can write on, see, or use either side.
Christopher printed the party invitations on two-sided paper to use half as many sheets.
Christopher 把派對邀請函印在雙面紙上，以便只用一半的紙張。
two-sided paper — paper printed on both sides
The noticeboard at the library entrance is two-sided, with announcements on the front and back.
圖書館入口處的佈告欄是雙面的，正面和背面都有公告。
two-sided — used predicatively with 'be'
Rania uses a two-sided whiteboard with a writing surface on one side and a magnetic board on the other.
Rania 使用一塊雙面白板，一面可以書寫，另一面可作磁鐵板。
Exhibition posters were printed on two-sided sheets, with the painting on one side and the artist's story on the other.
展覽海報印在雙面紙上，一面是畫作，另一面是藝術家的故事。
- double-sided
interchangeable for most physical objects (paper, tape, screen); 'double-sided' often implies both sides have the same coating or function
- bilateral
formal, mostly used for political or legal agreements, medical anatomy, or symmetry in biology — not for everyday objects
- reversible
suggests the object can be turned over to use the other side, often for clothing or fabric
- one-sided
has only one usable surface, or describes a situation where only one viewpoint is considered
文法句型
two-sided + noun
noun + be + two-sided
用法筆記
Attributive use before a noun (a two-sided sign) is more frequent than predicative use (the sign is two-sided). This adjective is mainly used for physical objects such as paper, tape, screens, and signs. For arguments or negotiations, the figurative sense (e.g. 'a two-sided agreement') is formal and less common — prefer 'bilateral' or 'mutual' in those contexts.