regular cusp的用法和樣例：
例句
- A cusp is also called a stationary point or point of retrogression gression.
尖點(diǎn)也叫做平穩點(diǎn)或逆行點(diǎn)。 - The amount of track points, including the double cusp points, which could be mostly realized by this kind of synthetic problems, was analyzed.
分析了包括雙尖點(diǎn)在內，該類(lèi)綜合問(wèn)題最多能實(shí)現的軌跡點(diǎn)數目。
