Halts the current rule engine execution and optionally clears all rule firings .
停止当前的规则引擎执行并选择性地清除所有规则触发。
Japan halts plan to kill humpback whales .
日本暂停捕杀驼背鲸的计划。
He points to one of the early success stories : herceptin a breast cancer treatment that halts tumor growth in patients who show overexpression of a gene called her2 .
