A laser beam like the one pictured up top combines short and long pulses of light to identify individual molecules with a high degree of precision from a safe distance.
一道激光射线由或短或长的光脉冲组合而成，从而能在一个安全的距离高精度地辨别单个的分子。
2
Converse to the question of precision, short pieces of data may be compact but difficult to understand without some external guide or reference.
与精确性问题相反，简短的数据看上去紧凑，但是如果没有外部的指导或参考，将难以理解。
3
The Sigma 30 artillery navigation and pointing system is designed for high-precision firing at short notice.