Tetrachord
n. 四音音列, 四弦琴
🗣️ 情景例句
A construction company. Roads, bridges, big stuff.
一家建筑公司。修路， 筑桥， 都是大工程。
A friend in need is a friend indeed.
患难朋友才是真朋友。
The shape and dimensions of the skyscrapers depend entirely on the necessity of obtaining the maximum income per square foot of ground,
每平方英尺地皮取得最大收入