中国茶叶在世界的受欢迎度减少

let alone更不用说
例句：She can't ride a bicycle, let alone drive a car.
她连自行车都不会骑，更别说开小汽车了。

2. We hope more banks in China will give us more support in terms of financing.

in terms of就...而论;在...方面
例句：In terms of money, he's quite rich, but not in terms of happiness.
就钱来说他很富有,但就幸福来说就不然了。

3. The tea expert adds that Chinese companies should also adapt to the needs of western customers, who might prefer black tea to green, and teabags to loose-leaf teas.

adapt to变得习惯于…, 使适应于, 能应付…
例句：I adapted quickly to the new climate.
我很快地适应了这种新的气候。

4. Wen Zhongliang, deputy director of the Foreign Trade Department under the Ministry of Commerce, says it is an urgent task for Chinese tea producers and sellers to build up the image of Chinese tea abroad to boost tea exports.

build up宣扬, 夸赞, 吹捧(某人或某物)
例句：The singer has been built up into a great success.
那位歌唱家受到了夸赞, 以致红了起来。

5. In addition to ensuring the high quality of Chinese tea, tea enterprises in the country should promote the image of Chinese tea together.

in addition to　除...之外(还)
例句：In addition to French, he has to study Japanese.
除了法语外,他还得学日语。