✔ 最佳答案
hold still
used for telling someone not to move: 不要動
e.g. Hold still while I brush your hair.
hold tight
1 used for telling someone to hold something, so that they do not drop it or so that they do not fall:
e.g. Hold tight when we go round the corner!
2 used for telling someone to wait and not do anything or not worry:
e.g. Hold tight there and I'll go and get him.