她不仅有时常喜怒无常的倾向，而且会错过约会，无法坚持完成项目，且似乎不到最后一分钟都不做任何计划。

Not only does she have a tendency to be moody all the time, but she misses appointments, doesn't follow through on projects, and doesn't seem to plan anything till the last minute.

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把他们称作一群懵懂无知、喜怒无常的孩子是冤枉了他们。

Calling them a bunch of capricious kids with half-formed ideas does them an injustice.

《柯林斯英汉双解大词典》

这也就反映了其喜怒无常的天性。

This also at times reflects their moody nature.

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