Mine development
[经] 矿山开发费
🧩 词语组成解析
mine
[maɪn]
pron. (I的所有格)我的（东西）;
n. 矿;矿井;地雷;水雷;
vt.& vi. 在…中开采，开采;
vt. 在…中[下]布雷;以地雷[水雷]炸毁;
🗣️ 情景例句
It's the world's largest island, but it's also the world's smallest continent.
它是世界上最大的岛屿，同时也是世界上最小的洲。
My sister worked as a secretary before she got married.
在她结婚了以前，我的姐姐为一位秘书。
How many spiders are engaged in this work no our behalf?
有多少蜘蛛在为我们效力呢？