短語總結：

by the seat of one's pants:在沒有客觀依據(jù)、茫無頭緒的情況下摸索行事。

eg: The teachers are not trained to recognize it.They're flying by the seat of their pants.

老師們并不是靠受教訓對此形成認識的。他們?nèi)孔约好鳌?/p>

2. back up: 支持，倒退，（資料）備份

eg: He backed up his arguments with facts.

他以事實支持自己的論點。

true: 適用，有效

eg:Does this rule hold true all the time?

這條規(guī)定一直有效嗎？

the board:包括一切地，全面地

eg:It is very cold outside, you'd better come indoors across the board.

外面很冷，你們所有人會好都進屋。