"In any case, the new outbreak has robbed Pu 'u 'o 'o of at least some of its lava supply from the summit," Eichelberger said.

“无论如何，这次新爆发至少从Pu ' u ' o ' o喷发的最高点那里偷到了一些熔岩供应”，埃切尔·伯格说。

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Lava flows from Pu 'u 'o 'o were active but sluggish Sunday, according to the observatory.

据观测站说，周日，从Pu ' u o ' o流出来的熔岩是活跃的但是流速缓慢。

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The volcano's Pu 'u 'o 'o crater collapsed on Saturday, and a 0.33-mile-long (0.5-kilometer-long) fissure ripped open on a separate region of the volcano.

上周六，火山的Pu ' u ' o ' o火山口崩裂，并且在一个分离的区域撕开了一条0.5公里长的裂缝。

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Given a start with some other fissile material (U-233, U-235 or Pu-239) as a driver, a breeding cycle similar to but more efficient than that with U-238 and plutonium (in normal, slow neutron reactors) can be set up. (The driver fuels provide all the neutrons initially, but are progressively supplemented by U-233 as it forms from the thorium.) However, there are also features of the neutron economy which counter this advantage.

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Until recently, the U.S. had been running out of Pu-238 as none had been produced domestically since 1988.

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