气相中的物质现在想压缩，下降到液体。
Stuff in the gas phase now wants to condense down into the liquid.
然而到了早上11点30分，奇怪的是核物质浓度大幅下降到了6毫希每小时，工作人员各自回到了岗位上。
By 11.30am however the level dropped dramatically, and mysteriously, to about 6msv per hour and the workers were back to the job.
显然，大多数的巨星能够失去足够多的物质以至于在燃尽其核燃料以前他们的品质下降到关键值1.4M以下。
Apparently most massive stars manage to lose sufficient material that their masses drop below the critical value of 1.4 m before they exhaust their nuclear fuel.
显然，大多数的巨星能够失去足够多的物质以至于在燃尽其核燃料以前他们的品质下降到关键值1.4M以下。
Apparently most massive stars manage to lose sufficient material that their masses drop below the critical value of 1.4 m before they exhaust their nuclear fuel.
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