Gadiometer
磁强梯度计
🗣️ 情景例句
That's a good question, Robbie.
这是个好问题， Robbie。
There is no friend so faithful as a good book.
最忠实的朋友莫过于一本好书。
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。