Ninety per cent of lone parent families are headed by mothers.90%的单亲家庭由母亲持家。a lone sailor crossing the Atlantic独自横渡大西洋的人A lone sea gull flew across the sky.一只孤独的海鸥在空中飞过....
A lone mother Canada goose honked a warning to stay away from her nest.一只孤独无伴的雌性加拿大黑雁鸣叫了一声，警告别人不要靠近它的巢。a lone sailor crossing the Atlantic独自横渡大西洋的人A lone rock outcropping juts through frozen Pasagshak Bay off Alaska'...
SD rats were divided into 3 groups: control, scald and electret group.将大鼠分成对照组 、 烫伤组和驻极体实验组.The melt blown nonwoven technology, the electret theory and electret nonwoven are introduced in this paper.系统介绍了非织造布熔喷工艺 、 驻极化理论...