(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
直升機
zhí shēng jīㄓˊ ㄕㄥ ㄐㄧ
helicopter[cedict]
上
shàngㄕㄤˋ
on; on top; upon; first (of two parts); previous or last (week etc); upper; higher; above; previous; to climb; to go into; above; to go up; to attend (class or university); third tone of putonghua[cedict]
坐
zuòㄗㄨㄛˋ
to sit; to take a seat; to take (a bus, airplane etc)[cedict]