It is now routine for the police to conduct drug sweeps on dance clubs, where this substance-known in Chinese as the "head waggling pill" for its popularity among dance fans-is commonly used.
近年來，幾乎三不五時，搖頭丸就要出一陣子鋒頭，然後，復歸沉寂，警方查緝 pub 幾乎已成慣例。