尺子的英文ruler；
rulern.统治者；支配者；直尺；例如The ruler cracked and splintered into pieces
He was a weak-willed and indecisive ruler.
他是一位意志薄弱、优柔寡断的统治者。
All the citizens trusted him because he was a just ruler.
所有的市民都信任他，因为他是一位公正的统治者。
Her brother is the king, but she is the effective ruler.
她的兄弟是国王，但她才是实际的主宰者。
