以下为句子列表：
英文: Now, all that one has to do is rub the stick against the gum twice, once against the upper jaw and then on the lower jaw, from one end to another, to collect oral mucosal transudate fluid, normally secreted in the oral cavity.
中文: 现在，这一切只要用一个棒摩擦牙龈两次，第一次贴着上颚，接着贴着下颚，从一边到另一边去收集口腔粘膜渗出液，通常在口腔秘密的分泌。
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英文: The measurements used are fork length, head length, upper jaw length, snout length, length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin, to pectoral fin, to ventral fin and to hard margin of preop
中文: 此所用于分析之外部非体节形质计有：尾叉长、头长、上颚长、吻长、眼径、背鳍基底长、臀鳍基底长以及吻端到前鳃盖骨后绿、背鳍起点、腹鳍起点、臀鳍起点等11个形质。
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