a. 反旋风的

[ adj ]
of or relating to or characteristic of the atmosphere around a high pressure center
<adj.pert>

Anticyclone \An"ti*cy`clone\ ([a^]n"t[i^]*s[imac]`kl[=o]n), n.
(Meteorol.)
A movement of the atmosphere opposite in character, as
regards direction of the wind and distribution of barometric
pressure, to that of a cyclone. -- {An`ti*cy*clon"ic}, a. --
{An`ti*cy*clon"ic*al*ly}, adv.

anticyclonic \anticyclonic\ adj.
1. of or pertaining to an anticyclone; moving in the opposite
direction of a cyclone.
[WordNet 1.5]