他们需要常听，但每次听的时间不宜过长，以5到10分钟为宜。
Students should often listen, but they should listen for short periods - five to ten minutes.
尽管如此，练习和沐浴至少间隔30 - 45分钟之间为宜。
However the time gap between practice and bath should be 30-45 minutes.
如果自己烤制鸡肉，可多烤10到15分钟，待表皮颜色变深为宜。
If roasting your own chicken, continue cooking it until skin is very dark, 10 to 15 minutes more.
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