一旦儿童能够回答诸如“记得是什么意思吗？”以及“知道某事或某物是什么意思吗？”等问题的时候，可能就会促进并完善他们的记忆。

Once children become capable of answering such questions as "what does it mean to remember?” and "what does it mean to know something?” improvements in memory seem to occur.

youdao

每个活动表示必须由某人或某物完成的某事。

Each activity represents something that must be done by someone or something.

youdao

简单地来说，某物做某事仅仅是因为它想这么做罢了,并没有做出任何解释。

simply saying something does x because it wants to do x doesn't actually give you any explanation at all .

youdao

or, to express the need for somebody else to either do something or have something.

也可以表达其他人做某事的必要或对某物的需求。

I need 课堂 - SpeakingMax英语口语达人

Use the "Is there" whenever you want to ask if something exists.

当你想知道某事或某物是否存在时，就可以使用“Is there”句型。

Is there 课堂 - SpeakingMax英语口语达人