This sonar can scan thousands of square kilometres of the shallow-shelf seas at one time and see schools of fish moving within them.

这种声纳能一次扫描几千平方公里的浅海区，发现其中的鱼群。

youdao

Readers scan dramatically improve their reading speeds by taking in several words in the line of text at one time instead of sounding out each word, or focusing on each letter of the word.

可以通过一次在一行里加入数个词的方法，来显著提高阅读速度，而不是逐字逐句去读出那些词来。

youdao

Two ways of getting signal from Circular-cone scan infrared homing head are given, one is getting signal form range another is getting from time.

介绍了圆锥扫描红外导引头幅值信号提取和时间信号提取的两种方法。

youdao

You can get a one-time scan of most ports free, and more thorough scans for a sliding fee.

CNN: Symantec offers Web-based PC checkups

Extending the UnNap Nap To make the UnNap Nap as close to a nap as possible, do a mental scan of the body, focusing on different muscle groups one at a time, stopping at any that are feeling tense.

CNN: How to relax at work