Precomputation
[航海]导航预行计算
🗣️ 情景例句
That's impossible.
不可能。
The mountains have brought forth a mouse.
大山生小鼠（指：费力大而收效小）。
Carlyle was entirely ignorant of what the bottle in his pocket contained,
卡莱尔不知道药瓶子里装的是什么药，