Two big white swans were flying above the river towards Lough Gill, head long stretched.
两只硕大的白色天鹅，伸长着脖子沿河飞翔，朝着吉尔湖的方向。
This paper describes the histological development of the gill, pseudobranch and swim bladder of the white achama by use of the technology of histological section and microscopy.
本文应用切片和显微技术，对短盖巨脂鲤鳃、伪鳃和鳔的胚后发育的组织形态学进行了研究。
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