See the complete heel, arch and five little piggies?
看见这完整的脚后跟脚弓和五个脚趾了吗？
Coat your pet's paw with a thin layer of petroleum jelly, and press the top of the paw firmly into the concrete. Press down on the heel of the paw to get a complete print.
把你的宠物爪子上涂上薄薄的一层凡士林，然后把爪子稳稳地按在混合物表面，注意把爪子后部也按住，这样才能得到一个完整的爪子印。
The Achilles heel of the Semantic Web may well be the complete disinterest of most authors in producing anything remotely approximating metadata for their pages.
语义web的要害可能在于多数作者对为其网页生成与元数据相去甚远的内容毫无兴趣。
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