2:27 193 来自何凯文考研英语 
读书人的苦付出后却看不到及时的回报，这是内心最大的苦，这种苦没人有能帮到你，只有时间能愈合，咬咬牙坚持吧！我知道有一天我的孩子也会面对这样的苦，我也帮不了他，我只能对他说，勇敢点，别放弃，这是每一个读书人都得经历的！慢慢的这种痛苦会成为一种力量，会变成一种习惯，会变成一份快乐！
Social- media firms are investigating whether they can tap the micro transactions market—say, by offering virtual currencies or goods that users can use as barter—though forced partnerships with local telecoms
firms threaten the profitability of such schemes.
词汇突破：tap 开发
micro transactions 微交易
barter实物交易；交易品，互换品
profitability 收益性
schemes 计划
主干识别：Social-media firms are investigating whether+宾语从句
其他成分：插入语：
by offering virtual currencies or goods that users can use as barter
状语从句: though forced partnerships with local telecoms firms
threaten the profitability of such schemes
微观分析：by offering virtual currencies or goods that users canuse as barter
that users can use as barter定语从句修饰goods,这里是通过语义判断出不修饰currencies的。
参考译文：社交媒体公司正在研究是否可以开发微交易市场，比如说，提供虚拟货币或者可以作为物物交换的商品，虽然被迫与当地的电信 企业建立起来的合作关系正威胁着这些计划的可盈利性。
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