The people who live in the hills and hollows of central appalachia face high rates of diabetes , heart disease , cancer and respiratory illness .
住在阿帕拉契的丘陵山谷地带的人们面临糖尿病、癌症及呼吸道疾病的风险很高。
Ridges , hollows , and variation in thickness can all deform or scatter the gpr signal , making the picture less clear and oil spills harder to spot .
冰脊、冰窟窿、冰厚度的变化都会分散透地雷达信号,从而使图片清晰度下降,泄漏石油更难发现。
The mountain people made infrequent trips down the slopes and out of the hollows to supplement their meager lives with the essentials ; coffee , sugar , flour , and sweet wheat middling .