| 释义 |
pearl oyster pə:lˈɔistə 短语¹⁴⁴⁹⁷²⁺²
基本英英例句
n.珍珠贝
Noun:
tropical marine bivalve found chiefly off eastern Asia and Pacific coast of North America and Central America; a major source of pearls The production of seed breeding of pearl oyster, Pinctada martens i by laser is10 times higher than by the conventional methods.
马氏珠母贝激光育苗，其产量比常规育苗增加10倍以上。 cnki |