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。
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.
本文对空间和地面生长的BSO晶体进行了X射线摇摆曲线、位错腐蚀和透过率的测试。
The space-grown and terrestrially-grown BSO crystals were measured by X-ray rocking curves and dislocation etchings as well as transmission spectra.
风暴折断了树木的枝条，将他们连根拔起，高大花草的茎都被摧毁，只有那些紧贴着地面生长的小花得以幸免。
The tempest tore the branches and uprooted the plants and broke the stems of the tall flowers, sparing only the little ones who grew close to the friendly earth.
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