1·We must also be on guard that we don't confuse such objective qualities as "oiliness" or "big-capness" or "consumerness" with what actually drives stock prices from day to day.
我们还必须要警惕，不能将“石油”或“大盘”或“消费”这些客观因素与每一天真正驱动股价的原因相混淆。
2·After all, cities are hyper-social places, in which residents must be constantly on guard, and have mathematically more opportunity to experience stressful interaction.
毕竟，城市是一个具有超社会性质的地方，身处其中的居民们必须时常保持警惕，并且拥有在数量上占优的机会去体验充满压力的相互作用。
3·With Ruby gem aasm, is it possible to define the not (!) operator on guard functions that return a Boolean result?
用红宝石的宝石协会，它是可能的定义不是(！)警惕的函数返回一个布尔值算子？
4·I must protect myself and be on guard.
我必须保护自己、保持警惕。
5·Be on guard. There are pickpockets around here.
要提高警惕，这里有扒手。
1·On guard: Mexico City is at a virtual standstill.
站岗：墨西哥处在一个实际意义上的停滞状态中。
2·The animal that goes to a favorite food-foraging location and sees signs that a predator was there - but not the predator itself - may be on guard the next time.
在某些情况下，我们会幻想自己的先人又复活了。 “一个动物到它最喜欢觅食地点，看到有个食肉动物一在那里的迹象， 但不是食肉动物本身，可能是上次（下次）在那里站岗。
3·Red means pass where no police on guard; red means pass where it is far away from city center.
红色意味着通过没有警察站岗，红色意味着通过远离城市中心的地方。
4·Two soldiers must be on guard all night.
必须有两个士兵整夜站岗。
5·Many south Korean soldiers on guard no longer present a rough, sunburnt face to the enemy.
南韩很多站岗的士兵不再是一张粗糙、晒得红通通的脸面对敌人了。