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题库 / Prep2007E1-SC-44
Scientists at the Los Alamos National Laboratory have succeeded for the first time in mining heat from the Earth's interior and producing energy on a commercial scale, enough for efficient generation of electricity and heating factories and homes.
and producing energy on a commercial scale, enough for efficient generation of electricity and heating
and producing enough energy on a commercial scale for electricity to be generated efficiently and to heat
for energy production on a commercial scale, enough for generating electricity efficiently and to heat
to produce energy on a commercial scale, enough for generating electricity efficiently and for heating
to produce enough energy on a commercial scale for efficient generation of electricity and heat
sth is big enough to do sth, 足够/而能;
sth is enough to do sth/for doing sth，某物对于做……是足够的
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