这种情况在大多数人身上都会经常发生，其后果是导致原先的负面评价转变成为正面评价，就像电灯开关从一头跳到另一头。
Something happens, in millions of humans each year, which changes a negative evaluation into a positive evaluation, like flipping a light switch.
其电容量-湿度关系呈开关特性，转变点约在85% RH。
Their humidity dependences of capacitance have switching characteristics with transition point about 85%rh.
当开关转变为任何变速“开启”的设置时，电流可以通过开关接到地上，继电器开启。
When the switch is turned to any of its variable speed "on" Settings, current can flow though the switch and down to earth to allow the relay to switch on.
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