There are two other kinds of research that have thrown some light on the origins of the Native American population; they involve the study of teeth and of languages.

还有另外两种研究对印第安人的起源提供了一些线索；它们包括对牙齿和语言的研究。

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Besides robots, two other kinds of things can occupy this world.

除了机器人，两个其他种类的东西可以占据这个世界。

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White blood cells and platelets are the two other kinds of blood cells, which help fight infection, while platelets help blood to clot.

白细胞和血小板是其他两种类型的血细胞，他们能够帮助机体抵御感染，血小板可以促使血液凝固。

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At the heart of this failure may be two other kinds of uncertainty about the future direction of government policy.

ECONOMIST: The impossible task of eliminating uncertainty

Its squeezable applesauce, called GoGo Squeez, sells for 99 cents. (Mott's apparently has no plans to sell applesauce in squeezable pouches.) In April, Robbins will launch three new Smashies flavors, an apple variation and two other kinds of pureed fruit.

FORBES: All-Consuming

While other kinds of food allergies present in the first two or three years of life, pollen allergies that contribute to oral allergy syndrome develop more slowly, Wood said, peaking in the teenage and young adult years.

CNN: Oral allergy syndrome may explain mysterious reactions