详细解释:要不是...
例句：
Because of this, the young man or woman writing today has forgotten the problems of the human heart in conflict with itself, which alone can make good writing because only that is worth writing about, worth the agony and the sweat.正因如此，今天从事写作的男女青年已经忘记了人类内心的冲突。而这本身就能就好作品。因为这是唯一值得写、值得呕心沥血地去写的题材。