encourage – inspire – push 鼓励， 激励

no longer – no more 不再

admit – acknowledge 承认

allow – permit 允许

state – declare – announce 宣布，声明

regret – sorry 遗憾的

remove – get off 脱下

start – begin 开始

observe -- stick to 遵守

previous – former 以前的

maintain – hold – think 认为

cause – bring about – lead to – result in 导致

error – mistake 错误

component – ingredient – element 成分

solve – settle 解决(问题)