you could use the following code to replace the multi-echo statement, and UNIX would only need to process a single execution

可以用以下代码替换多个 echo 语句，UNIX 只需处理一次执行

youdao

The interferometric phase of layover region is not accurate due to the superposition of multi-echo, it makes the discrimination difficult in phase unwrapping.

由于多点回波叠加，叠掩区域的相位并不准确，而且在相位解缠中影响判别，因此对叠掩区域进行识别具有重要意义。

youdao

In America prospects for the "multi-family apartment" rented sector are helped by the "echo-boomers", a youthful bulge in the population.

在美国，由于“回声潮一代”——即数量突增的年轻人口——起到的促进作用，“多户公寓”租赁业的前景向好。

youdao

At the end of this year, the European Space Agency will start to roll out the multi-billion-euro Sentinel fleet of satellites, which aim to echo the Landsat philosophy but with many more types of sensor.

BBC: Landsat aims to maintain gold standard