If you describe something or someone as unobtrusive, you mean that they are not easily noticed or do not draw attention to themselves.
例句
The coffee-table is glass, to be as unobtrusive as possible...那张咖啡桌是玻璃的,为的是尽量不惹眼。He managed the factory with unobtrusive efficiency.他经营那家工厂很有效率却不事张扬。
英汉词典释义
adj.
不引人注目的, 不显眼的
She’s a quiet unobtrusive student.她是个文静而不引人注目的学生。The secret service agents in charge of protecting the President tried to be as unobtrusive as possible.负责保护总统的秘密安全人员的行动尽可能不引人注目。