1. 达不到;辜负：fall out争吵;结果是 | fall short of达不到;辜负 | fall through落空,失败

2. 缺乏：1818fall out脱落 | 1819fall short of缺乏 | 1820fall through失败,成为泡影

3. 未达到;辜负：fall into 分成 | fall short of 未达到;辜负 | far beyond the planets远离行星的

4. 缺乏 不符合：fall victim to 成为......的受害者/牺牲品 | fall short of 缺乏 不符合 | find fault with 挑剔

verb

1. fail to satisfy, as of expectations, for example