The heart pumps by expending and contracting of muscle.心脏通过收缩肌肉抽取和放出(血液).Money held by households and firms is contracting - a harbinger of disinflation and slump.家庭和商户所持有的现金在缩水,这预示着通货紧缩和经济萧条.Most bats produce echolocati...
Some of them are like setting a trap ( with obstructions ).有些像是设的陷阱 ( 有障碍物 ).Ruler shows the distance in meters to nearest obstructions.标尺显示到最近的阻碍的距离,以米为单位.They went ahead of us to clear the road of obstructions.他们走在我们前面...