Basis of valuation
[经] 定值的基础
🧩 词语组成解析
basis
['besɪs]
n. 基础;主要成分;基准，基本原则;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
valuation
[[ˌvælju'eiʃən]]
n. 评价, 估价, 价值判断\\n[经] 估价, 计价, 评价
🗣️ 情景例句
I beg your pardon.
对不起。
I ought to take his advice.
我应该接受他的劝告。
and we have to lower into the ground and haul out of the ground great lengths of drill pipe which are rotated by an engine at the top and are fitted with a cutting bit at the bottom.
我们必须把很长的钻杆一节节地钻入地下，然后再从地下拉出来。钻杆顶部安装的发动机带动钻杆旋转，它的底部装有钻头。