For the neuraminidase inhibitors, the main constraints - which are substantial - involve limited production capacity and a price that is prohibitively high for many countries.

就神经氨酸酶抑制剂而言，有一些重大的限制因素，主要是生产能力有限，同时，在许多国家，其价格高得难以负担。

youdao

The main constraints are memory, battery life, ability to adapt to difference screen sizes and orientations, security, and network bandwidth.

最主要的限制包括内存容量、电池寿命、适应不同屏幕大小和分辨率的能力、安全和网络带宽。

youdao

However, while its hardware kept improving, the main constraints of its size did not.

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Three main factors are blamed for the likely constraints on long-term finance.

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