Add some comments for `import` function (#1202) (#403)
Add some comments for `import` function (#1202) (#403)

* Add some comments for `import` function (#1202)

...in case some readers are not familiar with it.

* translate comment

vuejs/jp.vuejs.org,vuejs/jp.vuejs.org,potato4d/jp.vuejs.org,potato4d/jp.vuejs.org