Instars
(instar 的復數) n. 齡(幼蟲兩次蛻皮間的蟲期)\\n[醫(yī)] 齡[蟲](幼蟲兩次蛻皮之間)
??? 情景例句
But you had to be good at math.
但是你數學一定很好。
To jump
躍起
I think I'm in a difficult position.
我想我現在的處境困難。