adjective
1- not bound or tied up解脱束缚的; 被释放的：
her hair was unbound.
她让头发披散着
figurative 〈喻〉they were unbound by convention.
他们不受传统束缚。
1.1
- (of printed sheets) not bound together（印刷品）未装订的。
1.2
- (of a bound book) not provided with a proper or permanent cover（装订的书）无正式封面的。
1.3
- Chemistry & Physics not held by a chemical bond, gravity, or other physical force【化】【物理】非结合的; 自由的：
unbound electrons.
无束缚电子。