Listening comprehension has been recognized not as a passive receptive skill but as an activecomplex cognitive process.
听力理解是一个主动的复杂的认知过程，而不是被动的接受技巧。
2
We do also have more complex systems that are used for space heating and they fall into two categories, passive and active heating systems.
我们确实也有更复杂的系统用于空间供暖，它们分为两类，被动供暖系统和主动供暖系统。
3
However, boys tended to play with more complex puzzles than girls, and the parents of boys provided more spatial language and were more active during puzzle play than parents of girls.