金属第二阶段复合材料 Metal-second phase composites
虽然纳米金属丝尚属试验阶段，但是在未来他们绝对会成为环境和健康探测器上某一微小电路或者其他分子机器。
While nanowires are still in an experimental stage, they may one day be used to link extremely small circuits in environmental and health sensors or other molecular machines.
Perl 6项目当前正是处于那个长期的中间阶段，表面看到的只是生锈的金属，而工人们正在深入地下进行幕后工作。
The Perl 6 project is at that long interim phase, rusty metal showing and workers hidden deep inside.
在他们的文明最初阶段，他们没有金属工具。
In the primary stage of their civilization, they had no metal tools.
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