a. 抑制的, 低调的
在线英汉词典
low-key的短语、例句：
low-key (also low-keyed), adj not intense or emotional; restrained 低调的; 不强烈的; 克制的; 有节制的
The wedding was a very ,low-key affair. 婚礼办得毫不招摇.

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