brainstorm detain

detain     Hong Kong activist Joshua Wong detained by police before Xi visit.

　　-tain -ten -tent -tin  to hold 握 持

　　　　tenant The desk was left by the previous tenant.

　　　　　　   The building is manily occupied by large commercial tenants.

　　　　tenacity   注意-ity会让前一音节重读  

　　　　tenacious 中的 -ious和-ity的影响相似   如 ambitious acrimonious amphibious adventitious

　　　　-tin  continent  （保持成一块的大陆） 非洲大陆  the continent of Africa

　　　　　　continue: to hold one thing together with another

     sustain  he sustain the whole family 他一个人养活全家。