heel; to follow closely; to go with; to marry sb (of woman); with; towards; as (compared to); from (different from); and (in addition to)[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]
用
yòngㄩㄥˋ
to use[cedict]
无线
wú xiànㄨˊ ㄒㄧㄢˋ
wireless[cedict]
保持
bǎo chíㄅㄠˇ ㄔˊ
to keep; to maintain; to hold; to preserve[cedict]
联系
lián xìㄌㄧㄢˊ ㄒㄧˋ
connection; contact; relation; in touch with; to integrate; to link; to touch[cedict]