(located) at; (to be) in; to exist; in the middle of doing sth; (indicating an action in progress)[cedict]
天体
tiān tǐㄊㄧㄢ ㄊㄧˇ
celestial body; nude body[cedict]
物理学
wù lǐ xuéㄨˋ ㄌㄧˇ ㄒㄩㄝˊ
physics[cedict]
研讨会
yán tǎo huìㄧㄢˊ ㄊㄠˇ ㄏㄨㄟˋ
discussion forum; seminar[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]
给
gěiㄍㄟˇ
jǐㄐㄧˇ
to; for; for the benefit of; to give; to allow; to do sth (for sb); (passive particle)[cedict]
to supply; provide[cedict]
他们
tā menㄊㄚ ㄇㄣ˙
they[cedict]
看
kānㄎㄢ
kànㄎㄢˋ
to look after; to take care of; to watch; to guard[cedict]