noiseless
/ˈnɔɪslɪs/adjective
1- silent; quiet安静的, 无声的：
the cycle is a benign form of transport, being noiseless and non-polluting
自行车是一种无害的交通工具, 既无噪声又不产生污染
given to almost noiseless fits of giggling.
喜欢发出一阵阵几乎无声的笑。
1.1
- technical accompanied by or introducing no random fluctuations that would obscure the real signal or data〈技〉无杂音的, 无噪声的。
派生词