Datum line
基准线
🧩 词语组成解析
datum
['detəm]
n. 数据，资料;[测]基点，基线，基面;论据，作为论据的事实;[数]已知数;
line
[laɪn]
n. 线条;排;行列;界线;
vt. 排队;用线标出;沿…排列成行;给…安衬里;
vi. 形成一层;排队;击出平直球;
🗣️ 情景例句
I've seen pictures of him.
我见过他的照片。
It must be rather difficult for us to push any sales if we buy it at this price.
如果我们按这个价格购买，将很能难推销。
The continents form rugged tablelands which stand nearly three miles above the floor of the open ocean.
大陆是崎岖不平的高地，高出辽阔海洋海底近三英里。