它是怎样产生的：目前在世界上有超过23000种的核武器，其中有8000种已在使用中，还有2000种正处于高度戒备状态，随时准备发射。
How it could happen: There are currently more than 23, 000 nuclear weapons in the world, of which 8, 000 are currently operational and 2, 000 are on high alert and ready to launch on short notice.
它是怎样产生的：目前在世界上有超过23000种的核武器，其中有8000种已在使用中，还有2000种正处于高度戒备状态，随时准备发射。
How it could happen: There are currently more than 23, 000 nuclear weapons in the world, of which 8, 000 are currently operational and 2, 000 are on high alert and ready to launch on short notice.
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