稳定

wěn dìng steady; stable; stability; to stabilize; to pacify

不

bù (negative prefix); not; no

掉

diào to fall; to drop; to lag behind; to lose; to go missing; to reduce; fall (in prices); to lose (value, weight etc); to wag; to swing; to turn; to change; to exchange; to swap; to show off; to shed (hair); (used after certain verbs to express completion, fulfillment, removal etc)

ios 苹果

píng guǒ apple; CL:個|个[ge4],顆|颗[ke1]

签名

qiān míng to sign (one's name with a pen etc); to autograph; signature

（ ios3652）mio