Pervicacity
n. pervicacious的變形
??? 情景例句
Licking envelopes.
粘信封。
You may rest assured that the shipment will be duly delivered.
你們盡可放心，我們會按時交貨的。
It must have been a gas that could burn but that would not explode, a gas that did not smell strong, and a gas that did not kill people.
它一定是一種能夠燃燒而不能爆炸的氣體，一種味道不很強的而且不使人致死的氣體。