二者择一地，如果使用者仅仅想要有一个单一正方形，计画也能做这。

Alternatively, if the user just wants to be given a single square, the program can do this too.

youdao

钢丝绳索具在使用前必须先试吊，再正式起吊。先择吊点应与吊重重心在同一条铅垂线上。

Bdfor using the sling, it should have a test. The shoice for the lifting point should be on the same line with the center of gravity.

youdao

钢丝绳索具在使用前必须先试吊，再正式起吊。先择吊点应与吊重重心在同一条铅垂线上。

Bdfor using the sling, it should have a test. The shoice for the lifting point should be on the same line with the center of gravity.

youdao