Underdeterminant
子行列式
🗣️ 情景例句
If you feel in any way unsatisfied, please just give me a call.
如果你觉得有任何不满意的地方，请给我电话。
I haven't seen you for ages.
好久没见了。
The albatross is the king of the gliders, the class of fliers which harness the air to their purpose, but must yield to its opposition.
信天翁是滑翔飞行的鸟类之王，它能自如地驾驭空气，但必须顺气流飞行。