If a situation or agreement is conditional on something, it will only happen or continue if this thing happens.
近义词
dependent , qualified
反义词
unconditional
双语例句
例：
Their support is conditional on his proposals meeting their approval.
他们的支持是以他的提议得到他们的批准为条件的。
例：
a conditional offer.
一项有条件的提议。
2.?条件性的（分句）
In grammar, a conditional clause is a subordinate clause which refers to a situation which may exist or happen. Most conditional clauses begin with 'if' or 'unless', for example 'If that happens, we'll be in big trouble.' and 'You don't have to come unless you want to.'