Variation problem
[计] 变分问题
🧩 词语组成解析
🗣️ 情景例句
They can build a space craft and send it to the edges of our very solar system.
他们能制出航空飞船并将其发送到太阳系的边缘。
We hope your design and the color will be strongly attractive to the American people.
我们希望你们的设计和颜色对美国人具有巨大吸引力。
We need seven of these.
我们要七个这种的。