1. underway 1：if any 如果有的话,即使有 | underway 1,在进行中;2,在航行中,开始前进 | close the book 了解,中止
2. wear off 1：wear down 1,(使)磨损 2,使厌倦 | wear off 1,磨损,2,逐渐减弱,消失 | wear out 1,穿坏 2,(使)耗尽
3. be equal to 1：end up with 以(某种身份,状态,境况)结束 | be equal to 1,等于,2 ,胜任 2,经得住 | be equipped with 装备着
4. by birth 1：had better 还是...为好,最好 | by birth 1,在血统上, 2,生来,天生地 | give birth to 1,生育, 2,产生