counterproductive (a)產生反效果的、適得其反的
(A) founder (v)(船)沉沒、破產、失敗
(B) flux (v)使熔化
(C) procreate (v)生殖、生育
(D) plateau (v)穩定、停滯 (n)高原
from Cambridge Dictionary
2. Prolonged running does not seem to be..-阿摩線上測驗