On the other hand, it did not understand why, in principle, the regime described in articles 20 and 21 of the Vienna Convention could not apply to reservations under article 19, paragraph (c).
另一方面，新加坡代表团不理解为什么在原则上《维也纳公约》第二十条和第二十一条所规定的制度不能适用于第十九条丙款所规定的保留。