BOTTOM-UP MODEL
\bˈɒtəmˌʌp mˈɒdə͡l], \bˈɒtəmˌʌp mˈɒdəl], \b_ˈɒ_t_ə_m_ˌʌ_p m_ˈɒ_d_əl]\
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"