Nikkei stock average futures

例句：

1. 1. The Nikkei stock average futures closed ata record high today.
   今天，日经指数期货收盘创历史新高。
2. 2. The Nikkei stock average futures are closelywatched by investors around the world.
   全球投资者密切关注日经指数期货。
3. 3. TheNikkei stock averagefutures have been volatilerecently, with many investors worried aboutthe market's direction.
   近期，日经指数期货波动剧烈，许多投资者对市场走向感到担忧。