Disposable environmentally friendly tableware is mainly used in the following aspects:

1. 節約資源：一次性環保餐具通常采用可降解或可回收的材料制成，如紙質、玉米淀粉等，這些材料相對于傳統的塑料餐具來說更加環保。使用一次性環保餐具可以減少對傳統塑料餐具的需求，從而節約石油等資源的消耗。

1. Resource conservation: Disposable environmentally friendly tableware is usually made of biodegradable or recyclable materials, such as paper, corn starch, etc., which are more environmentally friendly compared to traditional plastic tableware. The use of disposable environmentally friendly tableware can reduce the demand for traditional plastic tableware, thereby saving on the consumption of non renewable resources such as oil.

2. 減少污染：傳統的塑料餐具在使用后往往不能降解，容易造成大量白色污染。而一次性環保餐具采用可降解的材料制成，能夠在一定時間內自然分解，減少對環境的污染。

2. Reduce pollution: Traditional plastic tableware often cannot degrade after use, which can easily cause a large amount of white pollution. Disposable environmentally friendly tableware is made of biodegradable materials, which can naturally decompose within a certain period of time and reduce environmental pollution.

3. 衛生：一次性環保餐具經過嚴格的生產工藝和衛生檢測，確保了其符合食品標準。使用一次性環保餐具可以有效避免食品交叉污染，提高消費者的用餐。

3. Health and safety: Disposable environmentally friendly tableware has undergone strict production processes and hygiene testing to ensure that it meets food safety standards. The use of disposable environmentally friendly tableware can effectively avoid food cross contamination and improve consumer dining safety.

4. 方便快捷：一次性環保餐具輕便易攜帶，可以隨時隨地使用。對于外出就餐或者快速用餐的場合，一次性環保餐具能夠提供便利和效率。

4. Convenient and fast: Disposable environmentally friendly tableware is lightweight and easy to carry, and can be used anytime, anywhere. For dining out or quick dining occasions, disposable environmentally friendly tableware can provide convenience and efficiency.

總體來說，一次性環保餐具主要通過節約資源、減少污染、保證衛生以及提供方便快捷的特點，在各類場合中得到廣泛使用。但需要注意的是，盡管一次性環保餐具相對于傳統塑料餐具來說更加環保，但在實際使用中仍需注意正確的處理方式，如分類回收等，以限度地減少對環境的負面影響。

Overall, disposable environmentally friendly tableware is widely used in various occasions by saving resources, reducing pollution, ensuring hygiene and safety, and providing convenient and fast features. However, it should be noted that although disposable environmentally friendly tableware is more environmentally friendly than traditional plastic tableware, it is still necessary to pay attention to the correct handling methods in practical use, such as classification and recycling, to minimize the negative impact on the environment.