hold back和set back的意思不同。hold back的意思是克制。例句:It was hard for Stacy to hold Back the tears while watching the sad movie.
史黛西看悲伤的电影时很难克制流眼泪。
set back的意思是耽误，例句:He has been out of town on business for a week， which has really set him back in his studies.
他离城出差有一周了，这使他在学习上耽误了很多。
