Nand operation
[计] \与非\操作, \与非\运算
🧩 词语组成解析
[计] 与非
🗣️ 情景例句
Next time you are in town, drop me a line.
下次你在城里的时候给我写信吧。
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
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。