旅游项目的投入大，关联性强，阶段性明显，因此投资收益的不确定性大。
Tourism project has the characteristics, such as abundant investment, intense relationship and obvious stage, which result in uncertainty in capital return.
但合成红藻氨酸诱发动物癫痫呈现规律、稳定及阶段性明显的特征，且大鼠的死亡率较天然红藻氨酸低。
However, the epileptic seizure induced by SKA showed obvious stages, regular pattern and action steady. In addition, SKA caused lower fatality than KA did.
出现阶段性的愠怒、明显的疏远和冷淡。
There were periods of sulking, of pronounced distance, of coldness.
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