topical

形容词 topical:

1. pertaining to the surface of a body part
2. of or relating to or arranged by topics
3. of interest at the present time

1. His book is spice with clever topical allusion.
   他的书以言及生动的时事问题而增添了风趣。
2. His books was spiced with clever topical allusions.
   他的书以言及生动的时事问题而增添了风趣。
3. The editor often gives some opinion on topical issues.
   这个编辑常对一些时事问题发表意见。