two-sided + noun
作定语，修饰名词。
He used two-sided tape to mount the poster.
他用双面胶带贴海报。
可两面使用的；双面的
有两个面,双边的。；可双面使用的；可逆的。；有两面的；其显著性质在给定二元运算符的任一侧均适用。
able to be used on either side; reversible
此义指正反两面都可用；不是“双边的”或“两重性的”。
有两个面,双边的。
Having two sides, bilateral.
可双面使用的
capable of being reversed or used with either side out
可逆的。
Reversible.
有两面的
having two sides or parts
其显著性质在给定二元运算符的任一侧均适用。
Whose salient properties apply when (the specified object) appears on either side of a given binary operator.
具有两个方面或视角的。
Having two aspects or viewpoints.
与该坐标的真理模态或时间模态及其相反情况必然或绝对不同的。
That is necessarily or absolutely different than the respective coordinate alethic or temporal modality as well as its opposite.
This two-sided towel is soft on one side and absorbent on the other.
这条双面毛巾一面柔软，另一面吸水。
用法提示：two-sided 是形容词，修饰 towel，表示毛巾有两面且两面均可使用。
Use two-sided tape to stick the poster on the wall.
用双面胶带把海报贴到墙上。
用法提示：two-sided 是形容词，修饰 tape，说明胶带两面都有粘性。
I bought a two-sided cutting board so I can use one side for meat and the other for vegetables.
我买了一块双面切菜板，这样我可以用一面切肉，另一面切蔬菜。
用法提示：two-sided 是形容词，修饰 cutting board，表示切菜板有两面都可使用。
作定语，修饰名词。
He used two-sided tape to mount the poster.
他用双面胶带贴海报。
作表语，表示事物具有两面性。
The argument is two-sided; both perspectives have merit.
这个论点有两面性；两种观点都有道理。
接介词in，说明在哪方面具有两面性。
This issue is two-sided in nature, requiring careful analysis.
这个问题本质上是双边的，需要仔细分析。
grammar · medium
易错句子This paper has two-sided.
正确表达This paper is two-sided.
two-sided是形容词，不能直接作has的宾语，应使用系表结构。
grammar · medium
易错句子This is a two sides issue.
正确表达This is a two-sided issue.
描述一个事物具有两面性时，应用形容词two-sided，而非名词短语two sides。
bilateral 侧重正式关系或协议，two-sided 更通用
double-edged 强调同时有好坏两方面，two-sided 仅指有两面
two-faced 贬义指虚伪，two-sided 中性
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