Okay, the next productivity hack, combine activities whenever possible.

下一个提高工作效率的方法是，尽量合并活动。

Fisher combines two activities he loves, flying and photography, trying to photograph every glacier on Earth.

费舍尔将他热爱的两项活动——飞行和摄影结合在一起，试图拍摄地球上的每一座冰川。

Generally speaking, the barbell technique combines hyper-conservative activities with risky ones to protect us from irreversible harm in the event of a failure, while allowing us to benefit from the upsides of taking smart risks.

总的来说，杠铃策略结合了极其保守的活动和高风险活动，以保护我们在失败时免受不可逆转的伤害，同时让我们从明智冒险的好处中受益。