鋼筋混凝土

reinforced concrete

steel

steel reinforcing bar

muscle / tendon / veins visible under the skin / sth resembling tendons or veins (e.g. fiber in a vegetable)

confused / dirty / to mix / muddy / variant of 渾|浑[hun2]

to mix / to mingle / muddled / to drift along / to muddle along / to pass for / to get along with sb / thoughtless / reckless

to congeal / to concentrate attention / to stare

concrete

Tu (ethnic group) / surname Tu

earth / dust / clay / local / indigenous / crude opium / unsophisticated / one of the eight categories of ancient musical instruments 八音[ba1 yin1]