unmarked
/ˌʌnˈmɑːkt/adjective
1
- not marked未做记号的; 没有标志的; 无伤疤的：
an unmarked police car
一辆没有标志的警车
his skin was unmarked.
他的皮肤上没有伤疤。
1.1
- Linguistics (of a word or other linguistic unit) having a more general meaning or use than a corresponding marked term【语言学】（单词等）无标记的：
'duck' is unmarked, whereas 'drake'is marked. duck
（鸭）无标记, drake（雄鸭）有标记。
2
- not noticed未被注意到的：
it's a pleasure to reward them for work which might otherwise go unmarked.
很高兴在此奖励他们所做的, 而在其他情况下可能未被注意的工作。
3
- Brit. (of a player in a team game) not marked by a player from the opposing team〈英〉（球员）没有人盯防的：
Eyres was left unmarked and duly scored from eight yards.
艾尔斯没有对方队员盯防, 因而及时地从八码外进球得分。