Semivariable expenes
[经] 半变动费用
🧩 词语组成解析
[经] 半变动的(成本)
🗣️ 情景例句
Do you happen to know...
你是否碰巧知道…
The mountains have brought forth a mouse.
大山生小鼠（指：费力大而收效小）。
They saw many old things on show in glass-topped tables.
他们看到了在带玻璃罩的桌子里展出的许多古老的东西。