1. So involved with their computers (do the children become)that leaders at summer computer camps often have to force them to break for sports and games.
孩子们实在太痴迷于电脑了，所以计算机夏令营的领导员经常要强令他们休息一下而去做游戏和运动。
2. As the Internet becomes more and more commercialized, it is （in the interest of business） to universalize access - after all, the more people online, the more potential customers there are.
随着网络越来越商业化，广泛的使用网络在贸易方面流行——毕竟，越多的人在线，就有越多的有经济实力的客户。
3. Only（after studies provided evidence of the harmful effects of such programs ）has it been possible to modify TV programming policies.
只有当研究给出了这些节目产生不良影响的证据，才有可能修改电视节目计划。
4. Unpopular （as red has been in the past ）at the moment it is a favorite hair style.
虽然以前红头发不流行，但现在是一种受欢迎的发型。
