So molecules might generally still be in the ground vibrational levels, thermal energy isn't enough to raise them in many cases.
分子仍旧,在振动的基态,大多数情况热能不足以激发振动。
At first thought it seems incredible that there can be enough space in the "solid" ground underfoot to hold all this water.
乍一想,似乎难以置信的是,在脚下的“坚实”地面上居然有足够的空间来容纳这么多的水。
Either way, if its roots are pulled up from out of the ground as the tree topples over, then there's usually a big hole, a pit left in the ground where the roots used to be.
无论是哪种原因,如果树倒在地上时树根从地下被拔起,那么地面通常会有个大洞,在原来树根所在地留下一个坑。
Also,the root can stay in the ground for as long as three years, so it can be harvested as needed.
VOA: special.2010.06.08
She's a flower, she's perishable, she's half hidden, - and she's ultimately dead and in the ground-- whereas a star would seem to be something that she just can't be mapped onto if she is this half-hidden thing.
她是一朵花,是易腐烂的,有一半深埋在土里,最终凋谢回归土地-,如果她一般在土里,她就不可能是星星。
It is telling us that the ground state in lithium would be Z squared.
它告诉我们锂原子的基态,是z的平方。
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