perilous
adj
full of risk; dangerous多险的; 危险的
a perilous journey across the mountains 横越重山的艰险征途. perilously adv
perilously hot, fast, steep, etc 热得、 快得、 陡得...易出危险
They were perilously close to the edge of the precipice. 他们离悬崖边很近, 十分危险.
On the subject of reading, Francis Bacon, who lived at about the same time as shakespeare, wrote these words, Some books are to be tasted, others to be swallowed, and some few to be chewed and digested. This good advice shows how it is possible to read