VARA:=LLV(LOW,36);VARB:=HHV(HIGH,30);VARC:=EMA((CLOSE-VARA)/(VARB-VARA)*4,4)*25;趋势:=VARC,COLOR00FF00;VARD:=87.5;VARE:=(VARC-LLV(VARC,4))/(HHV(VARC,4)-LLV(VARC,4))*4*25;买:crOSS(VARE,87.5) AND 趋势<40;