soundless
['saundlis]
adj.无声的, 完全静寂的, 静悄悄的
例句与用法：
He's always sounding off about how he would manage the firm.
他总是大言不惭地说他能把公司经营好。
At the risk of sounding ungrateful, I must refuse your offer.
我甘受拂逆盛情之嫌，也必须谢绝你的提议。
The sound effects had been pre-recorded and were added to the dialogue.
音响效果经预录後已加入对话中。
The sound effects of the fight were very good in that radio play.
广播剧中那场战斗的音响效果很好。
Music with two or more independent melodic parts sounded together.
复调音乐具有同时发声的两个或多个独立旋律部分的音乐。
I must sound him out about his attitude to this issue.
我要试探他对这个问题是什么态度。
The studio is being wired for sound.
这个播音室正在安装音响设备用的电线。
词形变化：
副词: soundlessly | 名词: soundlessness |
详细释义：
a.
1. 无声的
2. 深不可测的