Boundary problem
[计] 边界问题
🧩 词语组成解析
🗣️ 情景例句
Fall is a great season because of all the wonderful colors.
秋天是个色彩缤纷的好季节。
A close mouth catches no flies.
病从口入，祸从口出。
Such undertakings require the precise planning and foresight of military operations.
这种活动需要有军事行动般的周密布署和预见能力。