frequency count的用法和樣例：
例句
- It is usually necessary to do various frequency counts with the more advanced type crypts.
在解一個(gè)較難的密碼時(shí)，通常需要進(jìn)行各種頻率統計。 - They maintain that the population base used to give frequency statistics must be drawn from the suspect's particular gene pool.
他們聲稱(chēng)用于頻率統計的人口基數必須從嫌疑犯的特定基因庫中獲得。
