Jenny helped her mother to top and tail the gooseberries for jam.
詹尼帮助母亲摘去鹅莓的根叶做鹅莓酱.
The distal centriole is like a bell, with its top connecting to the proximal centriole and with the entrance of its bottom connecting to the axoneme of the sperm tail.
远端中心粒呈钟罩形,顶端与近端中心粒相连,底部开口处与精子尾部轴丝端相连。
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