我们必须避免出现20世纪80年代那样具有破坏性的繁荣萧条交替循环的局面。We must avoid the damaging boom-bust cycles which characterised the 1980s.这是完善循环的最低限度人数.That is the minimum number necessary to complete the circuit.人类对硫循环的影响一直是很可观的.Man's effect ...
The large log basket can be used to tidy toys away...大木篮子可以用来装玩具。He tried to tidy up, not wanting the maid to see the disarray.他试图收拾一下，不想让女佣看见那里乱七八糟。She's obsessively tidy, always hoovering and polishing.她有洁癖，整天不是用吸...