失常

xíng dòng shī cháng

行动失常

act oddly

yā lì guò dà huì shǐ yùn dòng yuán fā huī shī cháng

压力过大会使运动员发挥失常。

Players are liable to crack under the pressure.

mǎ lì huǐ diào hūn yuē hòu yuē hàn shī cháng le

玛丽毁掉婚约后，约翰失常了。

When Mary broke off the engagement, John went into a flat spin.

jīng shén shī cháng

精神失常

not be in one's right mind

zhè shì shì wù jiān xiāng kè shī cháng de yì cháng biǎo xiàn

这是事物间相克失常的异常表现。

This is the abnormal manifestation of disorder of inter-restriction among things.

tā ér zi sǐ wáng shí tā jīng shén zhuàng tài shī cháng le

她儿子死亡时，她精神状态失常了。

She became unhinged when her son died.