have a second string to one's bow

后备方案,backu... ... ) backup solution 后备方案 ) have a second string to one's bow 有后备方案 ) final solution 最后方案 ...

... get one's second wind 喘过气来 have a second string to one's bow 作两手准备,留一手 in a second 一会儿,很快,马上 ...

英语语... ... 串到串修复 string-to-string repair 相关词组: have a second string to one's bow cross talk 串道; 串音; 串扰 ...