As a rule, however, such attacks have been aimed at causing damage rather than taking life.

然而，通常此类攻击意在造成破坏而非要人性命。

As a rule they are either fools or swindlers!

通常他们不是傻瓜就是骗子！

As a rule, our academic year begins early in September.

我们的学年通常在九月初开始。

I go to bed early as a rule.

我一贯睡得早。

All wanted blood except the boys, who liked it as a rule, but to-night were out to greet their captain.

大家都很嗜血，除了小男孩们，他们一般也喜欢血，但今天晚上他们出来是要迎接他们的队长。