无调子地

He sang tunelessly, not caring whether anyone heard him or not.
他无调地唱着歌，不在乎是否有人听见。
The old radio played a tunelessly humming melody, creating an eerie atmosphere in the room.
老式收音机播放着无旋律的嗡嗡声，使得房间里充满了怪异的气氛。
She hummed tunelessly to herself as she washed the dishes, lost in her thoughts.
她一边洗碗一边无调地哼着歌，沉浸在自己的思绪中。
The child was singing tunelessly in the bathtub, splashing water everywhere with joy.
孩子在浴缸里无旋律地唱歌，快乐地溅起水花。
As the engine sputtered to life, it emitted a tuneless, metallic groan.
当引擎启动时，发出了无调的、金属般的呻吟声。
He whistled tunelessly as he walked down the empty street, trying to appear nonchalant.
他沿着空荡荡的街道走着，无调地吹着口哨，试图显得若无其事。
The wind howled tunelessly through the gaps in the window frame, making it hard to sleep.
风无调地穿过窗框的缝隙呼啸着，使人难以入睡。
She strummed the guitar tunelessly, her mind preoccupied with the lyrics she was trying to compose.
她心不在焉地无调弹着吉他，心里正忙着构思歌词。
The birds chirped tunelessly outside, signaling the break of dawn.
鸟儿在外面无调地叽叽喳喳叫着，预示着黎明的到来。
He attempted to sing along with the song on the radio but found himself tunelessly mumbling the words.
他试着跟着收音机里的歌曲唱歌，却发现自己的声音无调地咕哝着歌词。