v. turn pale, as if in fear
s. very light colored; highly diluted with white
s. (of light) lacking in intensity or brightness; dim or feeble
s. lacking in vitality or interest or effectiveness
n. 栅栏, 界线, 范围
a. 苍白的, 暗淡的, 无力的
vi. 变苍白, 变暗, 失色
vt. 使变苍白, 使失色, 用栅栏围