You'll feel free and fresh from time to time.

　　你不時的會感到自由，精神飽滿。

　　She also promised to come back from time to time.

　　她還承諾會不時回來。

　　However, we do communicate successfully from time to time.

　　然而，我們有時確實能成功地溝通。

　　Clap your hands and move your arms and legs from time to time.

　　拍拍你的手，不時地移動你的'胳膊和腿。

　　We should adjust our aim from time to time in order to go ahead continuously.

　　我們應該時不時地調整我們的目標，以便繼續(xù)前進。