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厚积薄发的意思是充分地积累，少量地释放，可以翻译为accumulate as much as possible but to release a little at a time。其核心内涵是，凡事不可急于求成，应注重积累，充分准备，才能把事情做好（one should never seek quick results; rather, one should pay attention to accumulating knowledge and making full preparations before making advances）。
例句：
博观而约取，厚积而薄发，吾告子止于此矣。
Read widely and absorb the best from the books you read; acquire deep learning and share it gradually – that is all I can tell you.