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词语投案拆分为汉字：
投字的拼音、笔画、偏旁部首、笔顺、繁体字，投字字源来历，投字演变
抛，掷，扔（多指有目标的）：～篮。～弹（dàn ）。跳进去：～河。自～罗网。放进去，送进去：～入。～资。～标。走向，进入：～宿（找地方住宿）。～奔。～靠。～降。～师（从师学习）。～诉。发向：～射。～影。寄，递送：～递。～稿。合：～合。意气相……
案字的拼音、笔画、偏旁部首、笔顺、繁体字，案字字源来历，案字演变
长形的桌子或架起来代替桌子用的长木板：～子。～板。书～。条～。拍～而起。提出计划、方法和建议的文件或记录：档～。备～。议～。提～。方～。有～可查。～卷。～牍。事件，特指涉及法律问题的事件：惨～。血～。～件。～例。～犯。破～。古代有短脚盛食物……
汉语拼音：tóu àn
自行前往司法机关或公安机关报告作案情况听候处理。
章裕昆 《文学社武昌首义纪实》：“越二日， 海鸣 投案。幸得各报声援，两人均判徒刑一年半寝事。” 柳青 《创业史》第二部第八章：“我办下啥错事要到乡上去投案？”
He was on his way to surrender at the embassy of the United States, which has requested his extradition.
科克被捕前，正要向要求引渡他的美国大使馆投案。After a week on the run he gave himself up (to the police).
他经过一周的逃亡以後（向警方）投案了。The woman allegedly claimed she had thrown the severed member of her drug-addicted Taiwanese husband into a river before turning herself in.
据说该女子说自己在投案自首前已经将其吸毒成瘾的丈夫的阴茎剪成几段并扔进了河里。In a statement, the police insisted that they had searched fruitlessly for Mr. Yang, then told his wife he should turn himself in.
而当地警方的一份声明称，他们没有找到杨家勤，警方告诉他妻子，让她丈夫投案自首。He gave himself up to the police.
他向警察投案了。Hours after a former Illinois police sergeant suspected in his fourth wife's disappearance turned himself in, he was released.
伊利诺伊斯州前警官因涉嫌他的第四任妻子失踪案，数小时前投案自首，目前已经被释放。Police caught the truck driver soon after the incident and the van driver turned himself in on Sunday afternoon.
事件发生后，警方很快逮捕了第二辆肇事货车的司机，第一辆肇事面包车的司机于上周日下午投案自首。eg. He has been given until noon today to turn himself in to authorities.
他被要求在今天中午前向当局投案自首。The thief gave himself up to the police after running for two days.
这个小偷在逃跑两天之后向警方投案自首。