There's no way that they could have possibly used their arms for walking, making them obligate bipeds.
他们不可能用他们的手臂走路，使他们成为专有的两足动物。
Obligate biped
原声例句
阿尔伯塔大学-恐龙古生物学
阿尔伯塔大学-恐龙古生物学
So, an animal that walks primarily on two legs is an obligate biped and an animal that walks mainly on four legs is an obligate quadruped.
因此，主要用两条腿行走的动物是专性两足动物，而主要用四足行走的动物是专性四足动物。
英语百科
Bipedalism
![An ostrich, the fastest extant biped[1] at 70 km/h[2][lower-alpha 1]](/uploads/202501/30/Struthio_camelus_in_Serengeti_crop4841.jpg)
Bipedalism is a form of terrestrial locomotion where an organism moves by means of its two rear limbs or legs. An animal or machine that usually moves in a bipedal manner is known as a biped /ˈbaɪpɛd/, meaning "two feet" (from the Latin bis for "double" and pes for "foot"). Types of bipedal movement include walking, running, or hopping.
- mesochite的意思
- Mesochloa的意思
- mesochonchic的意思
- mesochondrium的意思
- Mesochora的意思
- Mesochori的意思
- mesochoroidea的意思
- mesochoudrium的意思
- mesochroic的意思
- Mesochronous的意思
- mesochymal的意思
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- mesoclimate的意思
- mesoclimatology的意思
- mesocline的意思
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- Mesoclitic的意思
- mesoclitics的意思
- Mesoclupea的意思
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- mesococcus的意思
- Mesocoel的意思
- mesocoele的意思
- mesocoelia的意思