*[if]
conj. 如果, 是否, 无论何时, 假设, 即使
n. 条件
计 DOS批处理命令:根据所测试的条件决定是否执行另一条命令
相关词组:
If weather permits…
if only
if so
as if
if at all
if it had not been for
if I were you