The number of articles about Tom Cruise's dangerous antics on the Mission: Impossible Fallout set are seemingly growing by the day.

关于汤姆·克鲁斯在电影《碟中谍：全面瓦解》中的危险动作的文章数量看上去一天比一天多。

Early on in production, though, there was one set-piece the producers teased above all others, one Cruise had reportedly been training over a year for: the HALO jump, or high altitude, low opening jump.

虽然在早期的电影制作中，有事先设定好的制片人戏弄过所有人的动作套路，但是据报道，克鲁斯已经为高跳低开式跳伞（或者说超高空跳伞，超低空开伞）训练了一年多。

What does that mean? Normal skydiving takes place at a typical altitude of around 4,000 metres, giving the jumper around 60 seconds of pure free-fall before deploying¹ a parachute.

这是什么意思？通常跳伞在离地面4000米的高度进行，跳高者在打开降落伞之前大约60秒的纯粹自由落体时间。

However, a HALO jump requires sees people launch out of aircraft from around 9,000 metres.

然而，高跳低开式跳伞需要在9000米左右的高度跳出飞机。

From this height, the temperature drops to two degrees Celsius² and requires those jumping to wear oxygen masks.

位于这个高度，温度会降到2摄氏度，他们需要戴上氧气面罩。

Not one to back down from a challenge, Cruise trained for weeks with a team of camera operators to perform a HALO jump for the new Mission: Impossible movie, the producers saying Cruise is the first ever actor to attempt the death-defying stunt³.

克鲁斯不是在挑战面前会退缩的人，为了在新片《碟中谍》中表演高跳低开式跳伞，他和摄影师团队一起训练了数周，制片人说克鲁斯是有史以来第一位尝试如此拼命的特技动作的演员。

Mission: Impossible Fallout, the sixth film in the action series, reaches UK cinemas 26 July.

碟中谍：全面瓦解》，该动作片系列的第六部电影，将于7月26日在英国上映。