表达式1: "x" plus 0.5 plus round left parenthesis, "x" , right parenthesis minus ceiling left parenthesis, "x" , right parenthesis 有图表。 要进行音频跟踪,按“Alt 键 + T”。x+0.5+roundx−ceilx
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表达式2: negative "x" minus 0.5 minus round left parenthesis, "x" , right parenthesis plus ceiling left parenthesis, "x" , right parenthesis 有图表。 要进行音频跟踪,按“Alt 键 + T”。−x−0.5−roundx+ceilx