True friendship is a plant of slow growth怎样翻译

这只是一部分 全部的是这样的:
True friendship is a plant of slow growth, and must undergo and withstand the shocks of adversity before it is entitled to that appellation. 真正的友谊是慢慢生长的树 ,要经得起患难的冲击,才称得上真正的友谊