这个机器一定有什么地方不对劲。
這個機器一定有什麼地方不對勁。
zhè ge jī qì yī dìng yǒu shén me dì fang bù duì jìn 。
Something must be wrong with the machinery.
Mandarin
洗衣机有些不对劲。
洗衣機有些不對勁。
xǐ yī jī yǒu xiē bù duì jìn 。
Something is wrong with the washing machine.
Mandarin
他知道她有点不对劲。
他知道她有點不對勁。
tā zhī dào tā yǒu diǎn bù duì jìn 。
He knew that something was wrong with her.
Mandarin
啥也不对劲儿。
啥也不對勁兒。
shá yě bù duì jìn er 。
Nothing feels right.
Examples (Wiktionary)
Mandarin
他虽然看起来大大咧咧，实际上关键时候还挺靠谱，这不，他第一个就发现了我脸色的不对劲，关心起来。
他雖然看起來大大咧咧，實際上關鍵時候還挺靠譜，這不，他第一個就發現了我臉色的不對勁，關心起來。
tā suī rán kàn qǐ lái dà dà liē liē ， shí jì shàng guān jiàn shí hòu hái tǐng kào pǔ ， zhè bù ， tā dì yī ge jiù fā xiàn le wǒ liǎn sè de bù duì jìn ， guān xīn qǐ lái ．
Although he seems casual in manner, he is actually quite reliable during critical moments. [I didn't mean to bring this up but here is an evidence of that]; Look, he was the first to notice that something was wrong from my appearance, and asked about it.