有一天来了信号，接着弗林特自己划着划子来了，脑袋上裹着块青头巾。
One fine day up went the signal, and here come Flint by himself in a little boat, and his head done up in a blue scarf.
因此，群青、青金石和合成群青的EPR信号应是两种硫自由基信号的重叠。
The result indicates that the EPR signal of ultramarine, lapis lazuli and artificial ultramarine should be the overlapping signal of two kinds of sulphur free radicals.
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