to be unkind or without compassion
冷酷无情或无同情心 (lěng kù wú qíng huò wú tóng qíng xīn)
"She must have a heart of stone to ignore that crying child."
"她一定有一颗铁石心肠,才能忽视那个哭泣的孩子。" (tā yī dìng yǒu yī kē **tiě shí xīn cháng**, cái néng hū shì nàgè kū qì de hái zi.)
to suddenly become very angry
to suddenly become very angry or lose control
someone who spoils the fun of others
My personal opinion or suggestion
used to introduce a new topic or add extra information
appearing in a cinema film