sharpenapencil;把铅笔削尖
apointedchin尖下巴
scream;尖叫
inashrillvoice尖声尖气
haveanacute[asharp]senseofsmell;鼻子尖
havesharpears;besharp-eared;耳朵尖
thepointofaknife;刀尖
thetipofapencil;铅笔尖
top-notch;thepickofthebunch拔尖儿的