Narrow and dangerous
险狭───Narrow and dangerous
Many medicines are dangerous; the margin between dose and overdose is often narrow.───许多药物都具有危险性，适量和过量之间的分际通常差别很小。
school was built on a riverbank reached by a narrow wooden bridge. To a child the bridge looked very high and dangerous. A person could hear the creaks and feel the shakes while walking on it.───学校建在河坡上，有座窄窄的木桥，小孩子眼里就算很高，很悬，人在上面走，能听见叽叽咔咔的摇晃声。
Buildings those are in a dilapidated, dangerous condition that have been badly built or roads that are curved and narrow or in any way hazardous to public safety.───建筑物因年代久远有倾颓或朽坏之虞、建筑物排列不良或道路弯曲狭小，足以妨害公共交通或公共安全。
in fact, he'd slept through most of the night-and I envied him that. His eyes wouldn't close. They kept watching me, narrow and dangerous───事实上，头天夜里他大部分时间都在睡觉，这使我嫉妒他。他不肯合眼，眯着眼一直盯着我，十分可怕。