b) Today surgery is more concerned with repairing and restoring functions than with the removal of organs.

现代外科更侧重于修复（器官）功能，而不是切除器官。 (两处动名词作介词宾语）

c) There is no method known to science today that can make it possible for us to magnify a drop of water enough to see one single atom.

目前，科学上还不（没有办法）能把一滴水放大到足以窥见其中一个单独的原子的。（一处不定式复合结构作宾语，一处不定式短语作状语）

d) Emitting infrared rays is an important way for the human body to give out surplus heat.

发射红外线是人体散发多余热量的一个重要途径。（一处动名词短语作主语，一处不定式复合结构作定语）

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