Meaning of suí shí:
suí shí
随时
Adverb
at any time; at all times; at the right time; whenever necessary
Nǐ kěyǐ suíshí gěi wǒ dǎ diànhuà.
你可以随时给我打电话。
You can call me at any time.
Rúguǒ nǐ xūyào bāngzhù, kěyǐ suíshí liánxì wǒ.
如果你需要帮助，可以随时联系我。
If you need help, you can contact me at any time.
