pear shaped是什么意思

用法例句

Collection and Identification of Piroplasma Infected to Cattle and Sheep in China;

我国牛羊梨形虫病病原的收集与鉴定

Epidemiology and Control of Piroplasmosis in Dairy in Nanyang City;

南阳市奶牛梨形虫病的流行病学调查及防制

Piroplasmosis is a kind of tick-borne protozosis world wide and is gaining increasing interest.

梨形虫病是一种越来越受关注的蜱播原虫病。