Sometimes this fall, if all goes well, a revolutionary new undersea vessel will be lowered gently into the waters of Monterey Bay for its maiden voyage.
分析：if引导的条件状语从句插在主句的中间，翻译时也做了同样的处理。
参考译文：今年秋天，如果一切顺利的话，一只革命性新潜艇将轻轻在蒙特利海湾下水，进行它的第一次航行。
The amount of deformation is directly proportional to the applied stress provided the force does not exceed a certain limit.
分析：本句中的条件状语由provided引导。引导条件状语从句的词组还有providing, as long as等。
参考译文：如果外力不超过某一限度的话，那么形变量与外力成正比。
