这个共同基金被认为是长期增长的安全投资。

This mutual fund is considered a ___secure investment for long-term growth.

我认为旅游业是一项安全的投资，而且是有益的。

I consider tourism a ___secure investment and one that is beneficial.

公司多样化的投资组合为抵御市场波动提供了可靠的基础。

The company's diversified portfolio provides a ___secure foundation against market volatility.