this is a heartening development
This is a heartening development 我们对此感到由衷的高兴。 It is heartening to note that in the period under review, despite sporadic violence, a number of positive developments ...
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this is a heartening development
这是一个令人振奋的进展
以上为机器翻译结果，长、整句建议使用 人工翻译 。