Doran
多兰系统, 多普勒测距系统
🗣️ 情景例句
I feel like an old man.
我感觉像一个老头。
Please think nothing of it.
别挂在心上。
They lived by hunting and by gathering roots, nuts and wild fruits.
他们靠狩猎和采集根茎、坚果和野果为生。