语录网短语说说 勿踩英语短语,keepoff的keepout区别?

勿踩英语短语,keepoff的keepout区别?

keepoff的keepout没有区别

在设计时要计算链路容量就得把所有发射器和接收机之间的增益和损耗加在一起,它还必须包括任何其他因素引起的损耗。如果计算结果为正值,那就表示有足够的容限允许环境发生变化,而系统仍可正常运行。对漏泄同轴电缆而言,耦合损耗设计一般在55~85分贝之间。

keep off,别靠近;(使)不接近;挡住;(雨、雪等)没有下;(使)不接近于;

例句

Keep off! Wet paint.

油漆未干,请勿靠近!

keep out,(使)留在外面;扣留;保留,留出;

screen We have screens at the windows to keep out flies.

纱网;纱门,纱窗我们把纱网装在窗户上阻止苍蝇。

二者区别如下:keep off,意思:(使)不接近;禁食;(雨、雪等)没有下;避开某一话题;keep out,意思:(使)留在外面;扣留;保留;留下。keep off例句:1.Keep off the lawn [ grass]. 请勿践踏草地。

2、Keep off the subject of politics 勿谈政治。

3、The doctor has advised him to keep off fattening food. 医生已建议他不要吃致肥食物。

4、Keep off the grass. 勿踩草坪。keep out例句:1.Tell the children to keep out of mischief! 告诉这些孩子不要调皮!

2、They sandbagged their homes to keep out floods. 他们在房屋周围堆沙袋以抵御洪水的侵袭。

3、Keep out of mischief. 不要顽皮。

4、She stamped her feet on the pavement to keep out the cold. 她在人行道上跺着双脚取暖

Keep off the grass!勿踩草地。

Be quiet!别说话 !

像make it.just do it都是祈使句以动词直接开头都叫祈使句

keep off the grass 英 [ ki:p ɔf ðə ɡrɑ:s ] 美 [ kip ɔf ði ɡrɑs ] v. 不践踏草地,小心 双语例句

1、 He told the boys playing football to keep off the grass. 他告诉那些踢足球的孩子们不要践踏草坪.

2、 Keep off the grass, please! 请勿践踏草坪!

3、 The policeman told the boys to keep off the grass. 警察告诉男孩子勿踩草地

本文来自网络,不代表语录网立场,转载请注明出处:https://www.chinansn.com/article-1-t20220718021008b1b7zu-0.html