first speed的用法和樣例：
例句
- The initial speed of a free falling body is zero, but it will grow faster and faster.
自由落體的初速為零，但越來(lái)越快。
first speed的相關(guān)資料：
臨近單詞
First ald
first
First Independence War of Cuba
first half period of gestation
first taxonomic classification
first-class commercial paper
First-episode schizophrenics
first polycondensation reactor
First Mongol Invasion of Japan
First - matched domain block
First opening or relaunch?
Firsthand historical materials
