The little bamboo tree had been growing underground for the past four years, in the fifth year and beyond, it developed a root system strong enough for its ground growth.

过去的四年里，这株小竹子一直在地下生长，第五年开始，它形成了足够强大的根系，可以在地面生长。

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Chapter four: design and realization of the system of strong ground movement observation and its core software are introduced.

第四章详细介绍了强地面运动观测系统各子系统的设计与实现，并阐述了其核心软件的实现与升级。

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The concrete manifestation is weak for the market binding force regarding four big state-owned Banks, but has the strong binding force to other joint stock system bank.

具体表现为市场约束力对于四大国有银行较弱，而对其他股份制银行有较强的约束力。

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Canada's banking system, essentially made up of the Royal Bank of Canada and four other big banks, remained strong during the global credit crisis.

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