hệ

hệ

"System" or "relation" depending on context.

Here, 'hệ' is used to refer to a system or a collection, specifically the Solar System.

Hệ Mặt Trời bao gồm các hành tinh quay quanh Mặt Trời.

The Solar System consists of planets revolving around the Sun.

Here, 'hệ' appears as part of 'mối quan hệ,' which means 'relationship,' indicating connections or associations between entities.

Mối quan hệ giữa hai nước rất thân thiết.

The relationship between the two countries is very close.

In this sentence, 'hệ thống' means 'system,' referring to an organized and structured arrangement, such as the city's traffic system.

Hệ thống giao thông ở thành phố ngày càng phát triển.

The transportation system in the city is increasingly developing.